MCB
- Badges of the United States Army
- Janney coupler
- Level crossings in the United Kingdom
- MCB Group
- MCB Tower
- Maidenhead Citadel Band
- Marine Corps Base Camp Pendleton
- Marine Corps Base Quantico
- Marine cloud brightening
- Mauritius Commercial Bank
- McComb (Amtrak station)
- Methodist College Belfast
- Miniature circuit breaker
- Molecular and Cellular Biology
- Monochlorobenzene
- Moulsecoomb railway station
- Movimiento Continental Bolivariano
- Muslim Commercial Bank
- Muslim Council of Britain
- United States Army