| Amazon Services LLC | DMR | Tier 3 Non-Standard | Arlington | Multi-County [3] | 2025-10-09 |
| American University | DMR | Motorola Capacity Plus Multi Site (TRBO) | Washington | Washington DC | 2020-03-08 |
| Audi Field | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2018-07-15 |
| Capital One Arena | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2018-06-05 |
| Capitol Complex | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2017-01-22 |
| Capitol Police | Project 25 | Phase I | Washington | Washington DC | 2020-02-07 |
| Catholic University of America | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2018-05-04 |
| DC Correctional Treatment Facility | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2017-04-03 |
| District of Columbia | Project 25 | Phase II | District of Columbia | Statewide | 2025-02-04 |
| DMR-MARC Amateur Radio Network (MD) | DMR | Conventional Networked | Various | Multi-County [11] | 2023-10-22 |
| First Responders Interoperable Radio System Team (FIRST) | Project 25 | Phase II | Various | Multi-County [2] | 2025-11-07 |
| FleetTalk (DC-Area Connect Plus) | DMR | Motorola Connect Plus (TRBO) | Various | Multi-County [8] | 2023-01-27 |
| FleetTalk (Silver Spring LTR) | LTR | Standard and Passport | Silver Spring | Multi-County [3] | 2020-07-01 |
| Four Seasons Hotel Washington | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2016-05-22 |
| George Washington University | DMR | Motorola Capacity Plus Multi Site (TRBO) | Various | Multi-County [2] | 2021-11-09 |
| Georgetown University | DMR | Motorola Capacity Plus Multi Site (TRBO) | Washington | Washington DC | 2018-05-04 |
| Hillwood Estate, Museum and Gardens | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2018-07-19 |
| Integrated Wireless Network (IWN) National Capital Region | Project 25 | Phase I | Various | Multi-County [13] | 2023-05-04 |
| International Monetary Fund | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2017-05-19 |
| Jefferson Hotel | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2016-05-22 |
| Joint National Capital Region | Project 25 | Phase II | Various | Multi-County [22] | 2025-10-24 |
| Justice Integrated Wireless Network | Project 25 | Phase II | Various | Multi-County [55] | 2025-06-28 |
| Knollwood | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2016-07-17 |
| Marriott Marquis (Washington) | DMR | Motorola Capacity Plus Multi Site (TRBO) | Washington | Washington DC | 2016-05-22 |
| National Law Enforcement Museum | Project 25 | Phase II | Washington | Washington DC | 2019-04-04 |
| Nationals Park | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2024-04-14 |
| Navy Federal Credit Union | Motorola | Type II Smartnet | Washington | Washington DC | 2012-03-13 |
| Omni Shoreham Hotel | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2016-05-22 |
| State Plaza Hotel | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2019-11-04 |
| Unidentified Federal P25 (680) | Project 25 | Phase I | | Multi-County [4] | 2020-04-14 |
| United States Department of Defense (14C) | Project 25 | Phase I | Various | Multi-County [62] | 2025-10-24 |
| United States Department of Defense (1B5C8-001) | Project 25 | Phase II | Various | Multi-County [8] | 2023-02-16 |
| United States Holocaust Memorial Museum | DMR | Motorola Capacity Plus Single Site (TRBO) | Washington | Washington DC | 2024-12-10 |
| Walter E. Washington Convention Center | DMR | Motorola Capacity Plus Multi Site (TRBO) | Washington | Washington DC | 2017-03-13 |
| Washington DC Area Federal SMR | NXDN | Icom IDAS Type D | Various | Multi-County [2] | 2020-08-09 |
| Washington Hospital Center (Capacity Plus) | DMR | Motorola Capacity Plus Multi Site (TRBO) | Washington | Washington DC | 2020-03-08 |
| Washington Hospital Center (LTR) | LTR | Standard | Washington | Washington DC | 2019-02-11 |
| Washington Metropolitan Area Transit Authority (P16) | Motorola | Type II SmartZone | Various | Multi-County [10] | 2024-12-09 |
| Washington Metropolitan Area Transit Authority (P25) | Project 25 | Phase II | Various | Multi-County [10] | 2024-03-21 |
| World Bank | DMR | Motorola Capacity Plus Multi Site (TRBO) | Washington | Washington DC | 2017-05-22 |
