| ITTP | Illicit Trade in Tobacco Products 
| Others |
| ITTP | Immune Thrombotic Thrombocytopenic Purpura
| Others |
| ITTP | Import Technician Training Program
| Others |
| ITTP | Information Technology And Telecommunications Policy
| Others |
| ITTP | Information Technology Tactical Plan
| Others |
| ITTP | Information Technology Tech Prep
| Others |
| ITTP | Information Technology Technician Pathway
| Others |
| ITTP | Information Technology Training Program
| Others |
| ITTP | Information Technology Transformation Program
| Others |
| ITTP | Information Telecommunication Technology Program
| Others |
| ITTP | Innovative Technology Transfer Partnerships
| Others |
| ITTP | Innovative Technology Transfer Program
| Others |
| ITTP | Innovative Technology Transfer Programs
| Others |
| ITTP | Institute for Training in Television Production
| Others |
| ITTP | Institute of Teacher Training Programme
| Others |
| ITTP | Institutional Training Technology Program
| Others |
| ITTP | Instytutu Transferu Technologii Poligraficznych
| Others |
| ITTP | Integrated Technology Transition Program
| Others |
| ITTP | Integrated Toxicology Training Partnership
| Others |
| ITTP | Integrative toxicology training partnership
| Others |
| ITTP | Intelligent Terminal Transfer Protocol
| Others |
| ITTP | Intensive Transitional Treatment Program
| Others |
| ITTP | Interagency Trusted Tester Program
| Others |
| ITTP | Interdisciplinary Team Training Program
| Others |
| ITTP | International Technology Transfer Programme
| Others |
| ITTP | International TEFL TESOL Program
| Others |
| ITTP | International Training And Tournament Program
| Others |
| ITTP | International Trauma Treatment Program
| Others |
| ITTP | International Triton Transition Program
| Others |
| ITTP | Internationally Trained Technology Professionals
| Others |
| ITTP | Internet Telephony Transport Protocol
| Others |