English abbreviations from fik to fins
- FIK (Finke Airport)
- FIL (FIL log)
- FILA (Fédération internationale des luttes associées (French, "International Federation of Associated Wrestling Styles"))
- Fil-Am (Filipino-American)
- FILO (First In, Last Out (see also LIFO))
- FIM (Finite-volume Icosahedral Model)
- FIMA (Flow Injection Mercury Analysis)
- FIMB (Football Is My Boyfriend)
- FIMF (Fisch International Microsurgery Foundation, Switzerland)
- FIMPT (Fellow of the Institute of Maxillofacial Prosthetists and Technologists)
- FIMS (Facilities Information Management System)
- FIMSA (Federation of Immunological Societies of Asia-Oceania)
- FIMU (Fine Arts and MUsic courses)
- fin (Finnish language (ISO 639-2 code))
- FINA ((p/a) Fédération internationale de natation (French, "International Swimming Federation"))
- FINCA (Foundation for International Community Assistance)
- FIND (Families In Need of Direction)
- FINE (Fine Is Not Elm)
- FINESSE (Financing Energy Services for Small Scale Users)
- FINEX (FINal EXercise)
- Fini Flight (A pilot's last flight in the aircraft before he/she leaves a squadron)
- FINL (Flame/Incendiary and Non-Lethal)
- FINS (Family In Need of Services)