MCB

MCB or mcb may refer to:

Biology:

• Molecular and Cellular Biology, the subject of either molecular biology, or cellular biology
• Molecular and Cellular Biology (journal), a scientific journal published by the American Society for Microbiology
• Monochlorobenzene, an aromatic organic compound
• The Molecular and Cellular Biology WikiProject

Electronics:

• Miniature Circuit Breaker, a relatively small electrical circuit breaker fitted in consumer units and small distribution boards
• Main Circuit Breaker, circuit breaker for a whole system
• Metal Core Board, circuit board with extra thermal conductivity
• Memory Control Block

Other:

• M. Carter Brown, the leading collector's website for paintball marker trading
• Maidenhead Citadel Band of The Salvation Army
• Mauritius Commercial Bank, the oldest and largest banking institution in Mauritius
• MCB Tower, a skyscraper in Pakistan, owned by Muslim Commercial Bank
• McComb (Amtrak station), Mississippi, United States; Amtrak station code MCB
• Methodist College Belfast, a voluntary grammar school in Belfast, Northern Ireland
• Music Colony Bi-weekly, a music magazine in Hong Kong
• Muslim Commercial Bank, a network of bank in Pakistan
• The Muslim Council of Britain, an organisation promoting unity among traditional Muslims in the United Kingdom
• Minimum Cycle Basis, a cycle basis of minimal weight in a graph
• Movimiento Continental Bolivariano, a left-wing political movement in Latin America
• Marine Corps Base, a type of military installation managed by the United States Marine Corps