IM or Im may refer to:
Arts and entertainment I.M, South Korean rapper and singer; member of boy band Monsta X "I.M" (song), a song by Israeli singer Michael Ben David Infected Mushroom, an Israeli psytrance and electronica duo Iron Maiden, a British heavy metal band Iron Man, a comic book superhero
Businesses IM Global, an American film and TV company Immediate Music, a music composition company Menajet (IATA: IM), a Lebanese airline IM Motors, Chinese NEV brand of SAIC Motor
Military and government Indian Mujahideen, an India-based militant Islamist group Inoffizieller Mitarbeiter, an informant for the Stasi of East Germany
Mythology Im (jötunn), a giant in Norse mythology IM, a cuneiform sign used as a logogram to represent names of weather gods, including Mesopotamian Ishkur/Adad, Hurrian Teshub and Hittite Tarhunna
Names Im (Korean surname) Yan (surname) (Cantonese romanization: Im), a surname
Places IM postcode area, for the Isle of Man Isle of Man (FIPS country code)
Science and technology Biology and medicine Infectious mononucleosis, a disease Internal medicine, a medical speciality IM injection, or intramuscular injection Imipramine, by the trade name IM Intermediate metabolizer, an individual with reduced metabolic activity
Computing .im, an Internet country code for the Isle of Man Information management Input method, a component that allows users to enter an expanded set of characters and symbols Instant messaging, a form of real-time communication online using typed text
Other uses in science and technology Im function in mathematics, where Im(z) denotes the imaginary part of a complex number z Intermodulation, the amplitude modulation of signals containing two or more different frequencies Induction motor Im, a subtype of irregular galaxy
Sports Individual medley, a type of swimming race International Master, a title in chess Intramural sports Inter Milan, an Italian football club
Other Independent Methodist (disambiguation) Scion iM, a Japanese-American compact car
See also I Am (disambiguation) including uses of "I'm" LM (disambiguation) 1M (disambiguation)