| Acces Communications (Ontario) | DMR | Motorola Connect Plus (TRBO) | Ottawa | Ottawa | 2018-07-10 |
| Acces Communications (Quebec) | DMR | Motorola Connect Plus (TRBO) | Montreal | Multi-County [9] | 2023-12-05 |
| Action RF | LTR | Standard | Ottawa | Ottawa | 2020-02-20 |
| Air Canada | DMR | Tier 3 Standard | Mississauga | Peel | 2023-03-13 |
| Air Transat | DMR | Motorola Capacity Plus Single Site (TRBO) | Mississauga | Peel | 2024-01-13 |
| Airbus DS Communications | Project 25 | Phase I | Ottawa | Ottawa | 2020-01-15 |
| Airtime Communications (IDAS) | NXDN | Icom IDAS Type C | Multiple | Multi-County [3] | 2024-03-10 |
| Ajax Downs and Slots | DMR | Motorola Capacity Plus Single Site (TRBO) | Ajax | Durham | 2024-02-08 |
| Alectra Utilities | DMR | Tier 3 Standard | South Central | Multi-County [4] | 2024-08-19 |
| Algoma Steel | DMR | Motorola Capacity Plus Multi Site (TRBO) | Sault Ste Marie | Algoma District | 2024-10-30 |
| Algoma Tubes | DMR | Motorola Capacity Plus Single Site (TRBO) | Sault Ste Marie | Algoma District | 2024-10-29 |
| Algonquin Highlands | DMR | Conventional Networked | Algonquin Highlands | Haliburton | 2021-10-15 |
| Alpine Ski Club Repeater 1 | DMR | Motorola Capacity Plus Single Site (TRBO) | Craigleith | Grey | 2020-01-26 |
| Alpine Ski Club Repeater 2 | DMR | Motorola Capacity Plus Single Site (TRBO) | Craigleith | Grey | 2020-01-18 |
| American Iron & Metal | DMR | Motorola Capacity Plus Single Site (TRBO) | Hamilton | Hamilton | 2022-04-30 |
| Apotex | LTR | Standard | Etobicoke | Toronto | 2017-12-04 |
| Art Gallery Of Ontario | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2023-05-19 |
| Attridge Transportation | NXDN | NEXEDGE 4800 | Greater Toronto Area | Multi-County [3] | 2018-12-21 |
| Barrie, City of | DMR | Motorola Connect Plus (TRBO) | Barrie | Simcoe | 2020-11-13 |
| BearCom Canada - Algonquin College | DMR | Motorola Capacity Plus Single Site (TRBO) | Ottawa | Ottawa | 2023-04-25 |
| BearCom Canada - Fonthill | LTR | Standard | Fonthill | Niagara | 2020-02-20 |
| BearCom Canada - Foymount | LTR | Standard | Foymount | Renfrew | 2020-02-19 |
| BearCom Canada - Kitchener | DMR | Motorola Capacity Plus Single Site (TRBO) | Kitchener | Waterloo | 2021-10-27 |
| BearCom Canada - Pembroke | LTR | Standard | Pembroke | Renfrew | 2020-02-19 |
| BearCom Canada - PushPlus Network | DMR | Motorola Connect Plus (TRBO) | Multiple Locations | Multi-County [14] | 2024-10-11 |
| BearCom Canada - Renfrew/Ottawa | DMR | Motorola Connect Plus (TRBO) | Multiple Locations | Multi-County [2] | 2022-05-11 |
| BearCom Canada - Sarnia | Motorola | Type II | Sarnia | Lambton | 2020-02-20 |
| BearCom Canada - St. Thomas LTR | LTR | Standard | St. Thomas | Elgin | 2020-02-20 |
| BearCom Canada - St. Thomas UHF | Motorola | Type II Smartnet | St. Thomas | Elgin | 2020-02-20 |
| BearCom Canada - Toronto Special Events 1 | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2023-06-09 |
| BearCom Canada - Toronto Special Events 2 | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2023-06-09 |
| BearCom Canada - United Counties of Prescott, Russell | DMR | Tier 3 Standard | Various | Prescott, Russell, United | 2022-12-12 |
| BearCom Canada - Woodstock | Motorola | Type II Smartnet | Woodstock | Oxford | 2020-02-20 |
| BearCom Canada - Woodstock DMR | DMR | Motorola Capacity Plus Multi Site (TRBO) | Woodstock | Oxford | 2020-02-20 |
| Bell FleetNet Ontario Provincial Government Zone 2 | Motorola | Type II SmartZone | Southeast Zone | Multi-County [16] | 2024-10-10 |
| Bell FleetNet Ontario Provincial Government Zone 3 | Motorola | Type II SmartZone | Northeast Zone | Multi-County [6] | 2024-04-04 |
| Bell FleetNet Ontario Provincial Government Zone 4 | Motorola | Type II SmartZone | Northwest Zone | Multi-County [3] | 2024-04-04 |
| Bell Land Mobile Radio Network (South Zone) | Project 25 | Phase II | Multiple Locations | Multi-County [40] | 2024-11-14 |
| Bell Mobility (Cornwall) | DMR | Motorola Capacity Plus Single Site (TRBO) | Cornwall | Stormont, Dundas, Glengarry | 2018-07-13 |
| Bell Mobility (Ottawa) | DMR | Motorola Capacity Plus Single Site (TRBO) | Ottawa | Ottawa | 2023-07-06 |
| Billy Bishop Toronto City Airport | DMR | Tier 3 Standard | Toronto Island | Toronto | 2024-02-07 |
| Blue Mountain Resort | DMR | Motorola Capacity Plus Multi Site (TRBO) | Craigleith | Grey | 2020-01-22 |
| Blue Water Bridge | DMR | Motorola Capacity Plus Single Site (TRBO) | Point Edward | Lambton | 2024-06-25 |
| Bradford-West Gwillimbury Fire | DMR | Conventional Networked | Bradford | Simcoe | 2019-09-28 |
| Brampton | DMR | Motorola Connect Plus (TRBO) | Brampton | Peel | 2024-07-07 |
| BrandMeister Canada Amateur Repeater Network | DMR | Conventional Networked | Multiple Locations | Multi-County [21] | 2023-05-26 |
| Brantford | Project 25 | Phase I | Brantford | Brant | 2024-03-10 |
| Brookfield Properties Management | LTR | Standard | Ottawa | Ottawa | 2012-06-30 |
| Bruce Power | DMR | Motorola Connect Plus (TRBO) | Multiple Locations | Bruce | 2022-07-09 |
| Budweiser Stage - Ontario Place | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2023-06-08 |
| Burl's Creek Event Grounds | DMR | Motorola Capacity Plus Single Site (TRBO) | Oro Station | Simcoe | 2023-08-13 |
| Cabot Canada | DMR | Motorola Capacity Plus Single Site (TRBO) | Sarnia | Lambton | 2024-06-25 |
| Caledon Town | LTR | Standard | Caledon | Peel | 2020-05-16 |
| Canadian Armed Forces Safety, Emergency and Administrative Radio System (SEARS) | Project 25 | Phase I | Various | Multi-County [9] | 2024-02-21 |
| Canadian Niagara Power | DMR | Tier 3 Standard | Fort Erie | Niagara | 2022-06-20 |
| Canadian Nuclear Laboratories Chalk River | DMR | Motorola Capacity Plus Multi Site (TRBO) | Deep River | Renfrew | 2018-01-14 |
| Canadian Tire Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Ottawa | Ottawa | 2019-12-30 |
| Canadian Tire Distribution Warehouse | DMR | Motorola Capacity Plus Single Site (TRBO) | Brampton | Peel | 2024-02-22 |
| Cargill Canada | DMR | Motorola Capacity Plus Single Site (TRBO) | London | Middlesex | 2018-11-05 |
| Carleton University | DMR | Motorola Capacity Plus Single Site (TRBO) | Ottawa | Ottawa | 2023-01-04 |
| Casino Niagara | LTR | Standard | Niagara Falls | Niagara | 2011-12-26 |
| Casino Rama | DMR | Motorola Connect Plus (TRBO) | Rama | Simcoe | 2017-12-01 |
| CBC Broadcasting Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2024-10-22 |
| Centre de Telephone Mobile (CTM) | DMR | Motorola Capacity Plus Single Site (TRBO) | Ottawa | Ottawa | 2024-06-29 |
| Centre For Addiction and Mental Health (CAMH) | DMR | Motorola Capacity Plus Multi Site (TRBO) | Toronto | Toronto | 2024-03-23 |
| CF Toronto Eaton Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2023-03-03 |
| CF Toronto-Dominion Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2024-05-06 |
| Chatham-Kent | Project 25 | Phase I | Chatham | Chatham-Kent | 2024-09-11 |
| Christie and Walther (Brockville / Cornwall) | Motorola | Type II | Brockville, Cornwall | Multi-County [2] | 2018-08-29 |
| CitiPlaza | LTR | Standard | London | Middlesex | 2017-03-22 |
| City of London OneVoice | Project 25 | Phase I | London | Middlesex | 2024-10-14 |
| Clearview Fire and Emergency Services | DMR | Conventional Networked | Clearview Township | Simcoe | 2023-09-23 |
| CN Tower | NXDN | NEXEDGE 9600 | Toronto | Toronto | 2024-02-07 |
| Columbia Sportswear | DMR | Motorola Capacity Plus Single Site (TRBO) | London | Middlesex | 2022-04-14 |
| Commerce Court | NXDN | NEXEDGE 9600 | Toronto | Toronto | 2023-04-18 |
| Conestoga Meat Packers | DMR | Motorola Capacity Plus Single Site (TRBO) | Breslau | Waterloo | 2023-05-10 |
| Corrections and Youth Services Radio Network (CYSRN) | TETRA | Standard | Various | Multi-County [9] | 2024-09-25 |
| Costco Wholesale Bakery Commissary | DMR | Motorola Capacity Plus Single Site (TRBO) | Vaughan | York | 2024-01-28 |
| CRC Communications | DMR | Motorola Capacity Plus Single Site (TRBO) | Thunder Bay | Thunder Bay District | 2024-04-26 |
| CRH Canada - Holcim | DMR | Motorola Capacity Plus Single Site (TRBO) | Mississauga | Peel | 2019-12-06 |
| Devonshire Mall | DMR | Motorola Capacity Plus Single Site (TRBO) | Windsor | Essex | 2018-10-22 |
| Direct Access (800 MHz) | LTR | Standard | Ottawa | Ottawa | 2018-06-18 |
| Direct Access (UHF) | LTR | Standard | Ottawa | Ottawa | 2019-06-23 |
| DMR-MARC Ontario Amateur Repeater Network | DMR | Conventional Networked | Multiple Locations | Multi-County [17] | 2022-10-10 |
| DuPont and Kemira Chemical Plants | Motorola | Type II Smartnet | Maitland | Leeds and Grenville | 2018-08-29 |
| Durham NextGen | Project 25 | Phase II | Durham | Durham | 2024-11-11 |
| Elements Casino Mohawk | DMR | Motorola Capacity Plus Single Site (TRBO) | Campbellville | Halton | 2018-06-18 |
| EnWin Utilities | DMR | Motorola Capacity Plus Single Site (TRBO) | Windsor | Essex | 2018-10-23 |
| Essa Township | DMR | Conventional Networked | Essa Township | Simcoe | 2022-08-09 |
| Estaire Bus Lines | NXDN | NEXEDGE 9600 | Sudbury | Multi-County [2] | 2022-04-23 |
| Exelradio 02 | NXDN | NEXEDGE 9600 | Various | Multi-County [5] | 2024-11-09 |
| Exhibition Place | LTR | Standard | Toronto | Toronto | 2019-11-22 |
| Fairmont Royal York Hotel | LTR | Standard | Toronto | Toronto | 2018-07-22 |
| Fallsview Casino | LTR | Standard | Niagara Falls | Niagara | 2020-08-06 |
| Fanshawe College | DMR | Motorola Capacity Plus Single Site (TRBO) | London | Middlesex | 2024-02-09 |
| FastNet | DMR | Tier 3 Standard | Multiple Locations | Multi-County [7] | 2024-08-23 |
| Federal Marine Terminals | DMR | Motorola Capacity Plus Single Site (TRBO) | Hamilton Harbour | Hamilton | 2017-09-18 |
| Fiat Chrysler Automobiles | DMR | Motorola Capacity Plus Single Site (TRBO) | Windsor | Essex | 2024-10-31 |
| First Canadian Place | NXDN | NEXEDGE 9600 | Toronto | Toronto | 2023-06-23 |
| Fleet Connect | DMR | Motorola Connect Plus (TRBO) | Multiple Locations | Multi-County [19] | 2024-09-18 |
| Ford Motor Company (Oakville) | DMR | Motorola Capacity Plus Single Site (TRBO) | Oakville | Halton | 2018-05-17 |
| Ford Motor Company - Essex Engine | DMR | Motorola Capacity Plus Single Site (TRBO) | Windsor | Essex | 2019-06-24 |
| Ford Motor Company - Windsor Engine | DMR | Motorola Capacity Plus Single Site (TRBO) | Windsor | Essex | 2019-07-06 |
| Forest City Communications (London) | LTR | Standard | London | Middlesex | 2012-02-29 |
| Four Points Sheraton | DMR | Conventional Networked | Niagara Falls | Niagara | 2024-02-11 |
| Four Seasons Centre for the Performing Arts | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2022-12-22 |
| Four Seasons Hotel and Residence | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2023-06-09 |
| General Motors (Canada) | DMR | Tier 3 Capacity Max | Multiple Locations | Multi-County [3] | 2024-08-08 |
| George Brown College - St. James Campus | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2023-06-02 |
| Georgian College | DMR | Conventional Networked | Various | Simcoe | 2018-01-22 |
| GOTRBO Network | DMR | Motorola Connect Plus (TRBO) | Multiple Locations | Multi-County [9] | 2024-01-16 |
| Gravenhurst Fire | DMR | Conventional Networked | Gravenhurst | Muskoka District | 2023-10-07 |
| Great Canadian Casino | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2024-02-07 |
| Great Wolf Lodge | DMR | Motorola Capacity Plus Single Site (TRBO) | Niagara Falls | Niagara | 2022-12-07 |
| Greater Sudbury | Project 25 | Phase I | Sudbury | Sudbury District | 2024-03-06 |
| Greater Toronto Airports Authority | Project 25 | Phase I | Mississauga | Peel | 2024-07-09 |
| Grey County Fire | DMR | Conventional Networked | Grey County | Grey | 2024-06-20 |
| Guelph City Services | DMR | Motorola Capacity Plus Single Site (TRBO) | Guelph | Wellington | 2021-11-03 |
| Haliburton Public Works | DMR | Conventional Networked | Countywide | Haliburton | 2019-06-06 |
| Halton Region | Project 25 | Phase I | Halton Region | Halton | 2024-10-16 |
| Hamilton | Project 25 | Phase I | Hamilton | Hamilton | 2020-07-10 |
| Hamilton Golf and Country Club | DMR | Motorola Capacity Plus Multi Site (TRBO) | Ancaster | Hamilton | 2024-06-01 |
| Hamilton Street Railway | DMR | Tier 3 Capacity Max | Hamilton | Hamilton | 2024-02-28 |
| Harbourfront Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2024-02-08 |
| Hartman Electronics and Communications (Owen Sound) | LTR | Standard | Owen Sound | Grey | 2018-08-29 |
| Hartman Electronics and Communications (Walkerton) | LTR | Standard | Walkerton | Bruce | 2018-08-29 |
| Health Science North | LTR | Standard | Sudbury | Sudbury District | 2020-08-27 |
| Honeywell Aerospace | DMR | Motorola Capacity Plus Single Site (TRBO) | Mississauga | Peel | 2021-07-20 |
| Hotel X | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2024-02-07 |
| Huntsville and Port Sydney Fire/Works | DMR | Conventional Networked | Huntsville | Muskoka District | 2021-08-12 |
| Huntsville Mill | NXDN | NEXEDGE 9600 | Huntsville | Muskoka District | 2021-06-30 |
| Imperial Oil (Nanticoke) | Project 25 | Phase II | Nanticoke | Haldimand | 2019-03-23 |
| Imperial Oil Sarnia | NXDN | NEXEDGE 9600 | Sarnia | Lambton | 2023-12-25 |
| INCO Superstack (Vale) | DMR | Tier 3 Standard | Sudbury | Sudbury District | 2024-03-06 |
| Indis-Comm | Motorola | Type II | Falconbridge | Sudbury District | 2017-09-18 |
| Innisfil | DMR | Conventional Networked | Innisfil | Simcoe | 2024-11-03 |
| International Plowing Match | DMR | Motorola Capacity Plus Single Site (TRBO) | Pain Court | Chatham-Kent | 2018-10-03 |
| Kawartha Lakes Fire and Rescue Services | DMR | Conventional Networked | Kawartha Lakes | Kawartha Lakes | 2024-03-12 |
| KELCOM (Windsor) | DMR | Motorola Connect Plus (TRBO) | Windsor | Essex | 2018-07-13 |
| Kingston | Project 25 | Phase I | Kingston | Frontenac | 2022-06-23 |
| Kirkland Lake Gold Mine | DMR | Motorola Capacity Plus Multi Site (TRBO) | Kirkland Lake | Timiskaming District | 2020-12-07 |
| Kitchener City Services | DMR | Motorola Capacity Plus Single Site (TRBO) | Kitchener | Waterloo | 2023-11-22 |
| Kitchener-Waterloo City Services | LTR | Standard | Waterloo | Waterloo | 2020-12-23 |
| Lakehead University | DMR | Motorola Capacity Plus Single Site (TRBO) | Thunder Bay | Thunder Bay District | 2024-04-26 |
| Le Germain Hotel | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2018-04-26 |
| MAGNA International | DMR | Tier 3 Standard | St Thomas | Elgin | 2018-01-25 |
| Magna Karmax | DMR | Motorola Capacity Plus Single Site (TRBO) | Milton | Halton | 2019-05-02 |
| Maidstone Bakeries | LTR | Standard | Brantford | Brant | 2012-12-11 |
| Manheim Auto Auctions | DMR | Motorola Capacity Plus Single Site (TRBO) | Milton | Halton | 2017-02-28 |
| Maple Leaf Sports and Entertainment | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2022-10-20 |
| Maple Lodge Farms | DMR | Motorola Capacity Plus Single Site (TRBO) | Brampton | Peel | 2024-03-06 |
| Marigolds and Onions Catering and Events | DMR | Motorola Capacity Plus Single Site (TRBO) | North York | Toronto | 2019-08-08 |
| Markham Stouffville Hospital | DMR | Motorola Capacity Plus Single Site (TRBO) | Markham | York | 2023-03-07 |
| MaRS Discovery Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2018-07-22 |
| McMaster University | DMR | Motorola Capacity Plus Single Site (TRBO) | Hamilton | Hamilton | 2024-02-09 |
| Message Center | EDACS | Standard | Ottawa | Ottawa | 2011-11-19 |
| Metro Toronto Convention Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2019-02-21 |
| Metrolinx - GO Transit | Project 25 | Phase II | Golden Horseshoe Area | Multi-County [14] | 2024-11-18 |
| MetroNET | DMR | Conventional Networked | Toronto | Toronto | 2020-11-09 |
| MRC Systems | DMR | Tier 3 Non-Standard | Multiple Locations | Multi-County [3] | 2024-08-14 |
| Muskoka Lakes Fire | DMR | Conventional Networked | Muskoka Lakes | Muskoka District | 2021-08-15 |
| National Communications Site Services (DMR) | DMR | Motorola Capacity Plus Multi Site (TRBO) | Hamilton | Hamilton | 2023-12-06 |
| Niagara Falls Convention Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Niagara Falls | Niagara | 2022-11-07 |
| Niagara Falls Works Department | DMR | Motorola Capacity Plus Single Site (TRBO) | Niagara Falls | Niagara | 2018-08-17 |
| Niagara Region | Project 25 | Phase II | Niagara Region | Niagara | 2023-08-14 |
| Northumberland County DMR System | DMR | Conventional Networked | Northumberland County | Northumberland | 2024-01-21 |
| Nova Chemicals | DMR | Tier 3 Standard | St. Clair Township | Lambton | 2023-12-28 |
| Nova Chemicals (Corunna) | Motorola | Type II | Corunna | Lambton | 2018-09-09 |
| Nova Chemicals (Moore) | Motorola | Type II | Moore Township | Lambton | 2013-05-02 |
| Oakville City Services | DMR | Motorola Connect Plus (TRBO) | Oakville | Halton | 2023-02-01 |
| OnQ Network | NXDN | NEXEDGE 4800 | Multiple Locations | Multi-County [33] | 2024-11-15 |
| Ontario Parks | Project 25 | Conventional Networked | Multiple | Multi-County [3] | 2024-04-23 |
| Ontario Power Generation | TETRA | Standard | Various | Durham | 2024-04-04 |
| Ontario Power Generation - Nanticoke Generating Station | EDACS | Standard | Nanticoke | Haldimand | 2013-10-17 |
| Oro-Medonte Fire and Emergency Services | DMR | Conventional Networked | Oro-Medonte Township | Simcoe | 2023-12-12 |
| Oshawa Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Oshawa | Durham | 2023-05-22 |
| Osler Bluff Ski Club | DMR | Hytera XPT | Blue Mountains | Grey | 2023-02-26 |
| Ottawa | Project 25 | Phase II | Ottawa | Ottawa | 2024-11-15 |
| Ottawa Congress Centre | LTR | Standard | Ottawa | Ottawa | 2011-11-19 |
| Ottawa International Airport Authority | DMR | Motorola Capacity Plus Single Site (TRBO) | Ottawa | Ottawa | 2022-09-06 |
| Owen Sound | NXDN | NEXEDGE 4800 | Owen Sound | Grey | 2022-08-25 |
| Oxford Communications - Brantford | LTR | Standard | Brantford | Brant | 2013-11-04 |
| Parliament Hill | Project 25 | Phase I | Ottawa | Ottawa | 2024-10-24 |
| Peel Region | Project 25 | Phase II | Peel Region | Peel | 2024-01-11 |
| Penetang/Midland Fire Service | DMR | Conventional Networked | Penetang/Midland | Simcoe | 2021-11-06 |
| PepsiCo Foods Canada | LTR | Standard | Cambridge | Waterloo | 2019-03-09 |
| Peterborough Lakefield Community Police | Project 25 | Phase I | Peterborough | Peterborough | 2023-09-26 |
| Point to Point | DMR | Motorola Connect Plus (TRBO) | Various | Multi-County [4] | 2022-02-23 |
| Point to Point Communications (TIII) | DMR | Tier 3 Capacity Max | Various | Multi-County [3] | 2024-10-14 |
| Porter Airlines | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto Island | Toronto | 2018-07-22 |
| Public Safety Service | DMR | Conventional Networked | Leamington | Essex | 2024-08-14 |
| Queen's University | DMR | Motorola Capacity Plus Single Site (TRBO) | Kingston | Frontenac | 2020-02-07 |
| Quinte Communications | NXDN | Icom IDAS Type D | Multiple Locations | Multi-County [3] | 2018-11-01 |
| Quinte Healthcare Corporation | DMR | Conventional Networked | Countywide | Multi-County [2] | 2020-08-27 |
| RadioCo | LTR | Standard | Toronto | Toronto | 2024-05-06 |
| Ramara Township | DMR | Conventional Networked | Ramara | Simcoe | 2019-03-01 |
| RBC Waterpark Place | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2020-01-22 |
| RCMP (National Division) | Motorola | Type II SmartZone | National Capital Region | Ottawa | 2024-11-12 |
| RCMP (O Division) | Project 25 | Phase I | Southern Ontario | Multi-County [25] | 2024-09-19 |
| RCMP (Transportable System) | Project 25 | Phase I | Transient Locations | Multi-County [13] | 2021-05-29 |
| Resolute Forest Products | DMR | Motorola Capacity Plus Single Site (TRBO) | Thunder Bay | Thunder Bay District | 2024-04-28 |
| Rideau Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Ottawa | Ottawa | 2018-06-18 |
| Ritz Carlton Hotel | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2018-11-05 |
| ROCK Networks | DMR | Motorola Capacity Plus Single Site (TRBO) | Ottawa | Ottawa | 2023-03-09 |
| Rockwool | DMR | Motorola Capacity Plus Single Site (TRBO) | Milton | Halton | 2020-06-02 |
| Rogers Centre | DMR | Tier 3 Capacity Max | Toronto | Toronto | 2023-06-10 |
| Royal Ontario Museum | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2023-03-21 |
| Saugeen Shores Police Service | NXDN | NEXEDGE 4800 | Multiple Locations | Bruce | 2022-10-01 |
| Sault Ste Marie | DMR | Motorola Capacity Plus Single Site (TRBO) | Sault Ste Marie | Algoma District | 2024-11-01 |
| Schaeffler Canada | DMR | Motorola Capacity Plus Single Site (TRBO) | Stratford | Perth | 2017-09-18 |
| Shell Canada | DMR | Motorola Connect Plus (TRBO) | Corunna | Lambton | 2017-09-18 |
| Sheridan College | DMR | Conventional Networked | Bram/Miss/Oak | Multi-County [2] | 2022-10-03 |
| Sir Adam Beck Hydroelectric Generating Station 2 | NXDN | NEXEDGE 9600 | Niagara Falls | Niagara | 2018-08-29 |
| South River Machar Fire Department | DMR | Conventional Networked | South River Machar | Parry Sound District | 2018-09-01 |
| South Simcoe Police Service | NXDN | NEXEDGE 4800 | Innisfil/Bradford-West Gw | Simcoe | 2024-02-02 |
| Southlake Regional Health Centre | DMR | Conventional Networked | Newmarket | York | 2024-02-11 |
| Spectrum Communications | DMR | Motorola Capacity Plus Single Site (TRBO) | Thunder Bay | Thunder Bay District | 2024-04-26 |
| Spectrum Telecom Group | DMR | Motorola Capacity Plus Single Site (TRBO) | Powassan | Parry Sound District | 2022-04-29 |
| Spectrum Telecommunications | DMR | Motorola Capacity Plus Single Site (TRBO) | Sudbury | Multi-County [3] | 2024-11-09 |
| Springwater Township Fire & Emergency Services | DMR | Conventional Networked | Springwater | Simcoe | 2021-02-23 |
| St. Laurent Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Ottawa | Ottawa | 2019-06-19 |
| St. Regis Hotel | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2024-02-11 |
| Stelco | DMR | Tier 3 Capacity Max | Hamilton | Hamilton | 2024-04-19 |
| Suncor Energy (Mississauga) | DMR | Motorola Connect Plus (TRBO) | Mississauga | Peel | 2019-12-06 |
| Suncor Energy (Sarnia) | DMR | Motorola Connect Plus (TRBO) | Sarnia | Lambton | 2023-12-27 |
| Talk Wireless | DMR | Motorola Capacity Plus Multi Site (TRBO) | Niagara Falls, Fonthill | Niagara | 2024-02-08 |
| TAS Quinte | LTR | Standard | Stirling | Hastings | 2009-05-10 |
| Tay Township | DMR | Conventional Networked | Tay Township | Simcoe | 2019-03-01 |
| Telequip Systems (NEXEDGE48) | NXDN | NEXEDGE 4800 | Simcoe & York Co. | Multi-County [4] | 2024-06-27 |
| Telequip Systems Barrie | LTR | Standard | Barrie | Simcoe | 2015-06-06 |
| Telequip Systems Edgar | LTR | Standard | Barrie | Simcoe | 2021-04-23 |
| Telequip Systems Midland | LTR | Standard | Midland | Simcoe | 2022-04-16 |
| Telequip Systems Parry Sound | LTR | Standard | Parry Sound | Parry Sound District | 2016-01-05 |
| Telequip Systems Port Carling | LTR | Standard | Port Carling | Muskoka District | 2015-02-21 |
| Tennis Canada | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2019-08-10 |
| Terra International | NXDN | NEXEDGE 9600 | Courtright | Lambton | 2018-09-09 |
| The Hospital For Sick Children | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2023-03-21 |
| The Raceway - London Fair District | DMR | Motorola Capacity Plus Single Site (TRBO) | London | Middlesex | 2022-03-30 |
| Thunder Bay | Project 25 | Phase I | Thunder Bay | Thunder Bay District | 2024-04-28 |
| Tiny Township | DMR | Conventional Networked | Tiny Township | Simcoe | 2020-05-26 |
| Toronto City Services | DMR | Tier 3 Non-Standard | Toronto | Toronto | 2024-08-14 |
| Toronto Dominion Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2022-11-11 |
| Toronto Emergency Services | Project 25 | Phase II | Toronto | Toronto | 2024-06-24 |
| Toronto Hydro | Project 25 | Phase II | Toronto | Toronto | 2024-07-08 |
| Toronto Metropolitan University | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2022-09-14 |
| Toronto Pan Am Sports Centre | DMR | Motorola Capacity Plus Single Site (TRBO) | Scarborough | Toronto | 2018-08-14 |
| Toronto Premiuim Outlets | DMR | Motorola Connect Plus (TRBO) | Halton Hills | Halton | 2024-02-16 |
| Toronto South Detention Centre | NXDN | NEXEDGE 4800 | Toronto | Toronto | 2022-02-27 |
| Toronto Transit Commission | TETRA | Standard | Toronto | Toronto | 2023-10-25 |
| Toronto Zoo | DMR | Motorola Capacity Plus Single Site (TRBO) | Scarborough | Toronto | 2017-02-12 |
| Toyota Manufacturing (Cambridge) | DMR | Tier 3 Standard | Cambridge | Waterloo | 2018-06-15 |
| Toyota Manufacturing (Woodstock) | DMR | Tier 3 Standard | Woodstock | Oxford | 2022-02-07 |
| TransAlta | DMR | Motorola Capacity Plus Single Site (TRBO) | Sarnia | Lambton | 2024-06-25 |
| Trillium Health Partners | DMR | Motorola Capacity Plus Multi Site (TRBO) | Mississauga | Multi-County [2] | 2024-03-01 |
| Turbo Connect | DMR | Tier 3 Capacity Max | Multiple Locations | Essex | 2022-09-27 |
| Unity Health - St. Michael's Hospital | DMR | Motorola Capacity Plus Single Site (TRBO) | Toronto | Toronto | 2023-11-01 |
| Univar | LTR | Standard | North York | Toronto | 2020-05-26 |
| University Health Network | DMR | Motorola Capacity Plus Multi Site (TRBO) | Toronto | Toronto | 2023-09-22 |
| University of Toronto | DMR | Motorola Capacity Plus Multi Site (TRBO) | Toronto | Toronto | 2024-02-06 |
| Walker Aggregates | DMR | Motorola Capacity Plus Single Site (TRBO) | Niagara Falls | Niagara | 2018-12-28 |
| Waterloo Region | Project 25 | Phase II | Tri-Cities Area | Waterloo | 2024-11-08 |
| Welded Tube of Canada | DMR | Motorola Capacity Plus Single Site (TRBO) | Welland | Niagara | 2024-10-11 |
| West Grey Police Service | NXDN | Conventional Networked | Durham/Hanover | Grey | 2022-10-01 |
| Western University | DMR | Motorola Capacity Plus Single Site (TRBO) | London | Middlesex | 2023-12-19 |
| Windsor | Project 25 | Phase I | Windsor | Essex | 2024-08-08 |
| Woodbine Entertainment Group | DMR | Hytera XPT | Toronto | Toronto | 2024-02-07 |
| York Region | Project 25 | Phase II | York | York | 2022-06-23 |
