| ITTC | Imagery To The Crowd 
| Others |
| ITTC | Immune Transplant and Therapy Center
| Others |
| ITTC | Industrial Transformation Training Centres
| Others |
| ITTC | Informacini Technologij Taikymo Centras
| Others |
| ITTC | Information and Telecommunication Technology Center
| Others |
| ITTC | Information Technology Training Center
| Others |
| ITTC | Information Technology Training Centre
| Others |
| ITTC | Innovation Technology training center
| Others |
| ITTC | Institute for Tourism Travel and Culture
| Others |
| ITTC | Institute for Training and Technical
| Others |
| ITTC | Institute for Training and Technical Cooperation
| Others |
| ITTC | Instituto Terra Trabalho Cidadania
| Others |
| ITTC | Integrated Train Testing Centre
| Others |
| ITTC | Integrative Trauma Treatment Center
| Others |
| ITTC | Intermodal Transportation Technical Committee
| Others |
| ITTC | International Teacher and Training Centre
| Others |
| ITTC | International Teaching and Training Centre
| Others |
| ITTC | International Team Training Center
| Others |
| ITTC | International Technology Transfer Conference
| Others |
| ITTC | International Theatrical Truss Corporation
| Others |
| ITTC | International Towing Tank Conference
| Others |
| ITTC | International Travel and Trailer Clubs
| Others |
| ITTC | International Trenchless Technology Conference
| Others |
| ITTC | International Tropical Timber Council
| Others |
| ITTC | Internationale Trekker Trek Club
| Others |
| ITTC | Iowa Telecommunications and Technology Commission
| Others |
| ITTC | Italian Tools Technology Company
| Others |