| Subject | English | Thesaurus |
| mil., abbr. | Army Regulation Reduction Program | ARRP |
| energ.ind., abbr. | Boiler Tube Failure Reduction Program/Cycle Chemistry Improvement Program | BTFRP/CCIP |
| abbr., scottish | Co-operative Threat Reduction | CTR |
| abbr., mil., WMD | Cooperative Threat Reduction Program Office | CTRPO |
| abbr., scottish | Co-operative Threat Reduction Programme | CTRP |
| account., abbr. | Debt Reduction Program | DRP |
| mil., abbr. | Department of Defense Procurement and Logistics Cost Reduction Program | DDPLCRP |
| ecol., abbr. | Flood Damage Reduction Program | FDR |
| mil., abbr. | Forces Reduction Programme | FRP |
| NASA, abbr. | Program Definition and Risk Reduction life cycle phase | PDRR |
| abbr., scottish | Program Definition & Risk Reduction | PDRR (US procurement system) |
| abbr., astronaut., mil. | Program-Definition and Risk-Reduction | PDRR (acquisition program phase) |
| univer., abbr. | Tuition Reduction Incentive Program | TRIP |
| ecol., abbr. | Waste Reduction Activities and Options | WRAO |
| ecol., abbr. | Waste Reduction Award Program | WRAP |
| ecol., abbr. | Waste Reduction Awards Program | WRAP |
| USA | Watershed Risk Reduction Program | WRRP |
