Sim or SIM may refer to:
Computing and technology SIM card or Subscriber Identity Module, used by mobile telephones HP Systems Insight Manager, a system management tool Scientific instrument module in the Apollo command and service module Security information management in computer security Selected ion monitoring, a mass spectrometry scanning mode Computer simulation Space Interferometry Mission, cancelled by NASA
Organizations Service de sécurité incendie de Montréal Scuola Italiana di Montevideo, the Italian day school of Montevideo, Uruguay Serving In Mission (formerly Sudan Interior Mission), a Christian mission organization Seniman Indonesia Muda (Young Artists of Indonesia), an Indonesian artist collective Servicio de Inteligencia Militar, a former Dominican intelligence service Servicio de investigación Militar, a former Spanish military intelligence service Servizio Informazioni Militari, a former Italian military intelligence service Singapore Institute of Management Society for Industrial Microbiology and Biotechnology Society for Information Management
Media TV SIM, a television station in Vitória, Espírito Santo, Brazil Rádio Sim, a defunct Portuguese radio station
People Sim (Korean surname) 심 Sim (Scottish surname) Shěn (surname) 沈, a Chinese surname sometimes romanized as Sim Sim (actor) (1926–2009), French actor, humourist, writer and comedian Sim Wong Hoo (1955–2023), founder of Creative Technology Alastair Sim (1900–1976), English actor Desmond Sim (born 1961), Singaporean playwright Kihwan Sim (born 1983), South Korean bass-baritone Thomas Robertson Sim (1858–1938), Scottish botanist
Places Sım, a village and municipality in Azerbaijan Sim (river), in Russia Sim, Russia, several inhabited localities Sim (historical region), in Horn of Africa
Pop culture Sim (album), 2017, by Vanessa da Mata SiM (band), a Japanese rock band SIM (film), 2013 Sim (pencil game)
Transport Simei MRT station, Singapore, MRT station abbreviation Simi Valley station, California, Amtrak station code
Other uses Siberian International Marathon , the driving license in Indonesia
See also Simsim (disambiguation) Sim4, a bioinformatics sequence alignment program SIM-VIII, 1931 Yugoslav airplane Sims (disambiguation)
Simm (disambiguation) Simming, the act of playing an online roleplaying game