Firm (disambiguation)
- British firms (organised crime)
- British royal family
- Duff McDonald
- Fair Immigration Reform Movement
- Fire Information for Resource Management System
- Fishery Resources Monitoring System
- Flood insurance rate map
- Hooligan firm
- J. C. Williamson's
- New Firm (Scotland)
- Old Firm
- The FIRM
- The Firm (1989 film)
- The Firm (1993 film)
- The Firm (2009 film)
- The Firm (2012 TV series)
- The Firm (Malaysian TV series)
- The Firm (album)
- The Firm (hip hop group)
- The Firm (novel)
- The Firm (novelty band)
- The Firm (rock band)
- The Firm (soundtrack)
- The Firm, Inc.
- USS Firm (AM-444)
- USS Firm (AM-98)