| IPAR | Impact Performance Assessment and Reporting 
| Others |
| IPAR | Impact Portfolio Allocation Review
| Others |
| IPAR | Improved Pulsed Acquisition Radar
| Others |
| IPAR | In Process Automatic Recalibration
| Others |
| IPAR | Increased Personnel Action Review
| Others |
| IPAR | Industrial Park Airport Related
| Others |
| IPAR | Initiative for Public Art Reston
| Others |
| IPAR | Initiative Prospective Agricole et Rurale
| Others |
| IPAR | Injury Prevention And Rehabilitation
| Others |
| IPAR | Inpatient Pre Admission Review
| Others |
| IPAR | Insitute of Professional Accountants of Russia
| Others |
| IPAR | Instantaneous Photosynthetically Active Radiation
| Others |
| IPAR | Instantaneous Photosynthetically Available Radiation
| Others |
| IPAR | Institute for Personality Assessment and Research
| Others |
| IPAR | Institute for Policy Analysis and Research
| Others |
| IPAR | Institute of Policy Analysis and Research
| Others |
| IPAR | Institute of Policy Analysis Research
| Others |
| IPAR | Institutional Planning Assessment and Research
| Others |
| IPAR | Institutional Planning Assessment Research
| Others |
| IPAR | Intercepted Photosynthetically Active Radiation
| Others |
| IPAR | International Plastic Aesthetic Residence
| Others |