RGA

RGA may refer to:

Companies and organizations

• R/GA, an international advertising agency
• Reinsurance Group of America, a reinsurance company
• Restricted Growth Association, a UK charity that supports people with dwarfism
• Rezerva generală a aviației (General Aviation Reserve), a Romanian aircraft factory (1916–1919)
• Roller Girls of the Apocalypse, a roller derby league in Kaiserslautern, Germany
• Royal Garrison Artillery, a pre-1930 corps of the British Army

Politics

• Red-Green Alliance (Denmark), a far left-wing political party
• Republican Governors Association, a US political support organization

Science and technology

• Regenerative amplification, a process of amplifying laser pulses with a resonator
• Relative gain array, a tool to determine optimal input-output pairings for MIMO systems
• Residual gas analyzer, a small mass spectrometer

Other uses

• IATA code for Hermes Quijada International Airport in Argentina
• Reallexikon der Germanischen Altertumskunde, a German-language encyclopedia of the history of the Germanic peoples
• Renzo Gracie Academy, a martial arts school
• Return goods authorization, part of the process of returning a product to its supplier for repair or replacement