MRM or mrm may refer to:

Places Mad River Mountain, a ski resort in western Ohio, United States Manari Airport (IATA airport code: MRM), an airport in Manari, Papua New Guinea Marymount MRT station (MRT station abbreviation), Singapore McArthur River mine (disambiguation), multiple locations

Activism Magyar Remény Mozgalom, a Hungarian political movement Maldives Reform Movement Men's rights movement, a social and political movement concerned with the legal and societal rights of men, primarily in Western cultures and India Respect Moldova Movement (), a Moldovan political party

Management Maintenance Resource Management, a human-error reduction strategy in aviation maintenance operations Maritime Resource Management, a human factors training programme aimed at the maritime industry Masters of Resource Management, a degree conferred by the School of Resource and Environmental Management at Simon Fraser University in Burnaby, British Columbia, Canada

Science Magnetic Resonance in Medicine, an academic journal Magnetic Resonance Microscopy, a magnetic resonance imaging technique at a microscopic level Mini-Research Module (disambiguation) (MRM-1 and MRM-2), two Russian-built labs on the International Space Station Minsky register machine, a type of abstract computing device propounded by Marvin Minsky Minterm-ring map, a variant of Karnaugh maps by Thomas R. McCalla in logic minimization Multiple reaction monitoring, a method for targeted quantitative mass spectrometry Multiple reciprocity method, a method similar to the boundary particle method

Other MRM or McCann Relationship Marketing, a global Internet professional services company Mechanically recovered meat, a paste/batter-like meat product Merlav language (ISO 639-3 code: mrm) Metered reply mail, a self-addressed envelopes or postcards with postage prepaid with a postage meter Monticello Railway Museum, a museum in Monticello, Illinois, United States Mountaintop removal mining Team Milram (UCI team code), a German pro cycling team XM1111 Mid-Range Munition

See also Mister M (disambiguation) (Mr M)