| CTIF | Center for Tele Infrastructure 
| Others |
| CTIF | Central Technical Interception Facility (Belgium)
| Others |
| CTIF | Centralized Test and Integration Facility
| Others |
| CTIF | Centre de La Tribune Internationale de La Femme (French: International Women's Tribune Center)
| Others |
| CTIF | Centre Technique des Industries de la Fonderie (French: Foundry Industries Technical Center)
| Others |
| CTIF | Churches Together in Felixstowe (UK)
| Others |
| CTIF | Club Technisch Interessierte Funkamateur (German: Technically Interested Amateur Radio Club)
| Others |