CMR can refer to:

• Cross Movement Records, Christian Hip-hop record label
• CJSA-FM (CMR Diversity FM 101.3), a Toronto radio station
• Cameroon
• Colossal magnetoresistance, an electrical phenomenon
• CMR convention, a UN convention on transport of goods by road
• Charles Marion Russell, artist
• Le Collège militaire royal de Saint-Jean, a Canadian military academy
• Code of Massachusetts Regulations
• Country Music Radio, a defunct European radio station
• Colin McRae Rally, a racing video game
• Common-mode rejection ratio, a measure of the capability of an instrument to reject a signal that is common to both input leads
• Carbon-13 NMR, the application of NMR spectroscopy to carbon-13
• Cardiovascular Magnetic Resonance, the use of MRI for assessing the function and structure of the heart and cardiovascular system
• CMR (motorcycle company)

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