| Acronym | Definition |
|---|---|
| ITR | Information Technology Research |
| ITR | Integra Type R (Acura automobile) |
| ITR | Income Tax Return |
| ITR | Information Technology Resources |
| ITR | Independent Technical Review |
| ITR | Internet Traffic Report |
| ITR | Internet Talk Radio |
| ITR | Industry, Tourism and Resources (Australia) |
| ITR | Institute for Telecommunications Research (Adelaide, South Australia) |
| ITR | Information, Ticketing and Registration |
| ITR | Invisible Thread Reel (levitation magic tricks device) |
| ITR | Infantry Training Regiment |
| ITR | Institut du Transport Routier (Belgium) |
| ITR | Invitation To Register (Interest) |
| ITR | Inside Texas Running (periodical) |
| ITR | Information Technology Representative |
| ITR | Information Technology Review |
| ITR | Input Transaction Record |
| ITR | Improved TARTAR Retrofit |
| ITR | Internal Transfer Rate (Seagate) |
| ITR | Independent Tank Regiment |
| ITR | Innovative Technology Requirement (environment) |
| ITR | Interpolation Timing Recovery |
| ITR | Ineligible to Re-Register (college) |
| ITR | Instrumented Test Range |
| ITR | Inventory Turn Rate |
| ITR | Internal Transfer Report |
| ITR | Integrated Technology Rotor |
| ITR | Integrated Test Requirements |
| ITR | Independent Telephone Research (California) |
| ITR | Intermediate Care Nursery |
| ITR | Intelligent Transaction Router (Delta) |
| ITR | International Trade Resources LLC (Washington, DC) |
| ITR | Issue Tracking Request |
| ITR | Institute of Tobacco Research |
| ITR | Inspection and Test Records |
| ITR | Irrevocable Trust Receipt |
| ITR | Instrument Technical Room |