IMCB may refer to:

• Islamabad Model College for Boys
• International Medical Commission on Bhopal
• Institute of Molecular and Cell Biology (disambiguation)
• Independent Mobile Classification Board, a defunct NGO replaced by the British Board of Film Classification

• MS Casino Express
• M/S Casino Express
• MSC Beatrice
• MSCC
• MSC Carmen
• MSC Carouge
• MSCC (disambiguation)
• MSC Cordoba
• MSC Crociere S.A.
• MSC Daniela
• MSC Danit
• MSC (disambiguation)
• MSCEIT
• MS Celtic Star
• MS Celtic Sun
• M. Sceve
• MSC Fantasia
• MSC (gene)
• MSC Geneva
• MS Challenge
• MS CHAP
• MSCHAP
• MSCHAPv2
• MS Charles A. Ranlett
• MS Check Knot