FGM may stand for:
- Female genital mutilation, also known as female genital cutting or circumcision
- The US military designation for a shoulder-launched, surface attack guided missile. Examples include the FGM-148 Javelin missile and the obsolete FGM-77 Dragon.
- Functionally graded material
- Free Gaza Movement
- Free gingival margin
- Film Grain Modeling, a H.264 feature
- Flux-gate magnetometers (FGM)