- CBR (Chemical, biological, radiological)
- CBRA (Chemical/Biological Response Aide)
- CBRD (Chemical/Biological/Radiological Defense)
- CBRE (Chemical, Biological, and Radiological Element)
- CBRF (Community Based Residential Facilities)
- CBRN (Chemical, biological, radiological, nuclear)
- CBRN CM (Chemical, Biological, Radiological, and Nuclear Consequence Management)
- CBRNE (Chemical, biological, radiological, nuclear and explosive)
- CBRN HAZ (Chemical, Biological, Radiological, and Nuclear Hazard)
- CBRNHE (Chemical, Biological, Radiological, Nuclear, and High-yield Explosives)
- CBRN PD (Chemical, Biological, Radiological, and Nuclear Passive Defense)
- CBRS (Concept-Based Requirements System)
- CBRT (Chemical-Biological Response Team)
- CBS (Columbia Broadcasting System)