RM

RM may refer to:

People and titles:
* Ricky Martin, a Puerto Rican popular music singer
* Robert Maschio, actor
* Ronald McDonald, the name of the McDonald's fast food restaurant clown
* R. Madhavan, an Indian actor
* Resident Magistrate
* Returned Missionary, a phrase used by Mormons to refer to young men and women who have served as full-time missionaries
* Regina M., from the German sitcom Verbotene Liebe, who is inseparable from her golden retriever Bonni

Places:
* Republic of Macedonia, sovereign state in Europe ("Republika Makedonija")
* Marshall Islands in the FIPS 10-4 standard for country codes that is used by the U.S. Government for geographical data processing
* RM postal area, the UK postcode area for Romford
* Santiago Metropolitan Region of Spain ("Región Metropolitana de Santiago")

In entertainment:
* RauteMusik.FM, a German Internet Radio Station
* Ringmaster, a class in the MMORPG game Flyff
* "The RM", a movie
* Random map, a randomly generated map in strategy games

In sports:
* Real Madrid C.F., a Spanish football (soccer) club
* One rep maximum, or 1RM, a weight training term

In business:
* Records Management, an information archivation practice
* Rapid manufacturing, the use of computer automated additive manufacturing processes to construct fully functional end-use products or components.
* Relationship Marketing, marketing jargon for sustaining and growing B2C relationships
* RM, a clothing line designed by Roland Mouret
* RM Auctions, a classic car auction company

In computing:
* rm (Unix), a Unix command for the removal of files
* RealMedia, a data format provided by RealNetworks
* Relational Model, a database model based on predicate logic and set theory
* Resource Management, a service in Asynchronous Transfer Mode (ATM) networks
* Reuters Messaging, an instant messenger application
* RM plc, a company providing products to educational establishments

In transport:
* Ranch to Market Road, a type of secondary state highway in Texas often signposted as RM
* Routemaster, the traditional London bus
* SJ Rm, a Swedish locomotive

In science:
* Relative migration, a Gel electrophoresis term
* Faraday Rotation measure, an astrophysical term
* Rm, the Magnetic Reynolds number, a ratio used in Magnetohydrodynamics

Other uses:
* The currency sign of the Malaysian ringgit, the Malaysian currency
* Royal Marines, the United Kingdom's amphibious forces
* rm, abbreviation for Rhaeto-Romance, a Romance language sub-family which includes a few languages spoken in Switzerland and North-Eastern Italy