FIM may refer to:

Organizations and companies

* Fédération Internationale de Motocyclisme, the International Motorcycling Federation * Flint Institute of Music, in Michigan, United States * Fox Interactive Media, now News Corp. Digital Media * Institute for Mathematical Research (German: '), at ETH Zurich * Independent Moralizing Front (Spanish: '), a defunct Peruvian political party * International Federation of Musicians (french: Federation Internationale des Musiciens), a global union federation

Science and technology

* Facing Identification Mark, a bar code designed by the United States Postal Service * Field ion microscope, used to image the arrangement of atoms * File integrity monitoring, used to validate software files * Fim switch, in ''E. coli'' * Flow-following, finite-volume Icosahedral Model, a numerical weather prediction model * Focused impedance measurement * Forefront Identity Manager, identity management software

Other

* Finnish markka, the former currency of Finland * First-in-man study, in medical clinical trials * Fisher information matrix, in mathematical statistics * Flight interruption manifest, a substitute airline ticket * Functional Independence Measure, tool for assessing functional capacities of patients undergoing rehabilitation *''Friendship Is Magic'' aka ''My Little Pony: Friendship Is Magic'', a 2010 animated series {{disambiguation