IF2 may refer to:
Bacterial initiation factor 2 (IF-2) IF2 on the International Fujita scale, a tornado rating Interceptor Force 2, a 2002 science fiction television film If 2, a 1970 album by If
See also
Eutelsat I F-2, a defunct communications satellite also called European Communications Satellite 2 (ECS-2) International Foundation for Internal Freedom (IFIF)
IFF (disambiguation) IF (disambiguation)