SIFF

SIFF or Siff may refer to:

Film festivals

 * Seattle International Film Festival, established 1976
 * Sedona International Film Festival, established 1994
 * Shanghai International Film Festival, established 1993
 * Singapore International Film Festival, established 1987
 * Sofia International Film Festival, established 1997
 * Sonoma International Film Festival, established 1997

People with the surname

 * Gregory Siff
 * Maggie Siff

Other uses

 * Save Indian Family Foundation, a men's rights organization in India