FRG may refer to:
- Family Readiness Group in the United States Army
- Germany (the Federal Republic of Germany, 1990–present)
- West Germany (the Federal Republic of Germany, 1949–1990)
- FMN reductase (NAD(P)H)
- Friendship Radiosport Games
- Functional renormalization group
- Guatemalan Republican Front (Spanish: Frente Republicano Guatemalteco), a defunct political party in Guatemala
- Republic Airport in East Farmingdale, New York, United States
This disambiguation page lists articles associated with the title FRG.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: