| ITPA | Ibm Tivoli Performance Analyzer 
| Others |
| ITPA | Illinois Test of Psycholinguistic Abilities
| Others |
| ITPA | Illinois Tractor Pullers Association
| Others |
| ITPA | Illinois Tractor Pulling Association
| Others |
| ITPA | Independent Telecommunications Pioneer Association
| Others |
| ITPA | Independent Third Party Administrator
| Others |
| ITPA | Indiana Truck Pulling Association
| Others |
| ITPA | Information Technology Professionals Association
| Others |
| ITPA | Institute for Terrestrial and Planetary Atmospheres
| Others |
| ITPA | International Tax Planning Association
| Others |
| ITPA | International Tennis Performance Association
| Others |
| ITPA | International Tokamak Physics Activities
| Others |
| ITPA | International Tokamak Physics Activity
| Others |
| ITPA | International Trotting Pacing Association
| Others |
| ITPA | International Truck Parts Association
| Others |