| ITRA | Iationiowa Therapeutic Recreation Association 
| Others |
| ITRA | Income Tax Reimbursement Allowance
| Others |
| ITRA | Independent Textile Rental Association
| Others |
| ITRA | Information Technology Research Academy
| Others |
| ITRA | Information Technology Risk Assurance
| Others |
| ITRA | Institut Togolais De Recherche Agronomique
| Others |
| ITRA | Inter Tier Relationship Architecture
| Others |
| ITRA | International Technology Rental Association
| Others |
| ITRA | International Tenant Representative Alliance
| Others |
| ITRA | International Timeshare Refund Action
| Others |
| ITRA | International Tire And Rubber Association
| Others |
| ITRA | International Toy Research Association
| Others |
| ITRA | International Trail Running Association
| Others |
| ITRA | International Tricycle Racing Authority
| Others |
| ITRA | Irish Tag rugby association
| Others |