| Acronym | Definition |
|---|
| SIFF➣Seattle International Film Festival |
| SIFF➣Save Indian Family Foundation (India) |
| SIFF➣Sedona International Film Festival (Sedona, AZ) |
| SIFF➣Shanghai International Film Festival (China) |
| SIFF➣Solomon Islands Football Federation |
| SIFF➣Sims International Film Festival (Simatography) |
| SIFF➣Stateless Internet Flow Filter |
| SIFF➣Singapore International Film Festival (est. 1986) |
| SIFF➣Sydney International Film Festival (Sydney, Australia) |
| SIFF➣Survival International Film Festival (Australia) |
| SIFF➣Swiss International Finance Forum |
| SIFF➣Successor Identification Friend or Foe |
| SIFF➣Salento International Film Festival (Italy) |
| SIFF➣Social Investment Forum Foundation (environmental group) |