RMA may refer to:

Business and technology

  • Return merchandise authorization, returning goods to the supplier for repair or replacement
  • Rogue Music Alliance, American independent record label
  • Radio Manufacturers Association, standards and trades association from 1924–1950
  • Regionalmedien Austria, Austrian media company
  • Reliability, Maintainability, and Availability analysis, in reliability and systems engineering
  • Relationship Management Application, a service offered by SWIFT
  • Rate-Monotonic Analysis, the qualitative method used to prepare a system for Rate-monotonic scheduling
  • U.S. Rubber Manufacturers Association

Education

  • Randolph-Macon Academy, a preparatory school in Virginia, United States
  • Rubin Museum of Art, a museum in New York City
  • Riverside Museum Associates, a non-profit that supports the Riverside Metropolitan Museum, California
  • Royal Musical Association, British musicological organization

Government and law

  • Resource Management Act 1991, an Act of Parliament in New Zealand
  • Respect for Marriage Act, a 2022 United States federal law that protects same-sex and interracial marriages.
  • Richmond Metropolitan Authority, an authority in Richmond, Virginia
  • Regional Mobility Authority, an independent local government transportation agency in the U.S. state of Texas
  • Risk Management Agency, an agency of the United States Department of Agriculture
  • Reedley Municipal Airport, a public airport in Reedley, California

Medicine

  • Refusal of medical assistance, where a patient or their medical power of attorney refuses treatment or transport to a hospital by emergency medical services.
  • Registered medical assistant, in jurisdictions where "medical assistant" is a protected title

Military

  • Rocky Mountain Arsenal, near Denver, Colorado
  • Royal Marine Artillery, formerly a part of the Royal Marines
  • Royal Military Academy (disambiguation), several military institutions
  • Reichsmarineamt, the Admiralty of Imperial Germany's navy (historic)
  • Revolution in Military Affairs, the recent rapid development of military technology and its corresponding impact on warfare

Other

  • Contracted form of Real Madrid CF, a football club in Spain
  • MTV Russian Music Awards
  • Roma Airport, IATA airport code "RMA"
  • Rma, known as Qiang language, a Sino-Tibetan language cluster