| Aerospace Data Facility East | Project 25 Phase I | Fort Belvoir | 
| Amazon Services LLC | DMR Tier 3 Non-Standard | Arlington | 
| Central Intelligence Agency | Project 25 Phase II | Dulles | 
| Fairfax County | Project 25 Phase II | Fairfax | 
| Fairfax County School Buses | DMR Tier 3 Standard | Falls Church | 
| FleetTalk (DC-Area Connect Plus) | DMR Motorola Connect Plus (TRBO) | Various | 
| George Mason University | LTR Standard | Fairfax | 
| Greenspring Village | NXDN Icom IDAS Type D | Springfield | 
| Inova Fairfax Hospital | DMR Hytera XPT | Falls Church | 
| Integrated Wireless Network (IWN) National Capital Region | Project 25 Phase I | Various | 
| Interstate Repeater System | DMR Conventional Networked | Various | 
| Joint National Capital Region | Project 25 Phase II | Various | 
| Justice Integrated Wireless Network | Project 25 Phase II | Various | 
| Metropolitan Washington Airports Authority | Project 25 Phase I | Various | 
| Mount Vernon | NXDN Icom IDAS Type D | Mount Vernon | 
| Northern Virginia Electric Cooperative | DMR Conventional Networked | Various | 
| Northern Virginia Emergency Response System | DMR Tier 3 Standard | Various | 
| Prince William Communication (Fairfax) | LTR Standard | Fairfax | 
| Rapidan Radio Communications (Fairfax) | LTR Standard | Fairfax | 
| Unidentified Federal P25 (680) | Project 25 Phase I |  | 
| Virginia Statewide Agencies Radio System (STARS) | Project 25 Phase II | Statewide | 
| Washington DC Area Federal SMR | NXDN Icom IDAS Type D | Various | 
| Washington Metropolitan Area Transit Authority (P16) | Motorola Type II SmartZone | Various | 
| Washington Metropolitan Area Transit Authority (P25) | Project 25 Phase II | Various |