List of entities that use trunked radio systems located in Riverside County.
- Riverside County Sheriff
- Eastern Riverside Interoperable Communications Authority
- March Air Reserve Base
- Agua Caliente Casino
- Caltrans
- Eastern Municipal Water District
- Hemet Unified School District
- Morongo Casino Resort
- Navy Region Southwest
- Pechanga Casino & Resort
- Soboba Band of Luiseno Indians
- Soboba Casino
- Southern California Edison
- University of California Riverside