| Subject | English | Thesaurus |
| abbr., scottish | Accuracy Improvement Program | AIP (USA) |
| abbr., scottish | Accuracy, Reliability, Supportability Improvement Program | ARSIP (USA) |
| abbr., scottish | ADAWS Improvement Programme | ADIMP (UK Royal Navy) |
| mil., abbr. | Advance Helicopter Improvement Program | AHIP |
| mil., abbr. | Aircraft Improvement Program | AIP |
| transp., abbr. | Airport Capital Improvement Program | ACIP |
| abbr., scottish | Analogue Autoland Improvement Programme | AAIP |
| abbr., astronaut., mil. | Anti-Submarine Warfare Improvement Program | ASWIP |
| abbr., astronaut., mil. | Anti-surface warfare Improvement Program | AIP |
| transp., abbr. | Approach Lighting System Improvement Program | ALSIP |
| transp., abbr. | Army Helicopter Improvement Program | AHIP |
| abbr., scottish | Army Helicopter Improvement Program | AHIP (USA) |
| abbr., astronaut., mil. | Army Model Improvement Program | AMIP |
| mil., abbr. | Army Model Improvement Program Management Office | AMMO |
| abbr., scottish | ASuW Improvement Program | AIP (US Navy) |
| mil., abbr. | Aviation Materiel Management Improvement Program | AMMIP |
| abbr., scottish | Avionics Improvement Program | AIP (USA) |
| mil., abbr. | Battlefield Command Improvement Program | BCIP |
| abbr., scottish | Big Look Improvement Program | BLIP (US Navy) |
| energ.ind., abbr. | Boiler Tube Failure Reduction Program/Cycle Chemistry Improvement Program | BTFRP/CCIP |
| abbr., astronaut., mil. | Business Process Improvement Program | BPIP (CIM term) |
| busin., abbr. | Capital Improvements Program | CIP |
| el., abbr. | Cascade Improvement Program | CIP |
| abbr., mil. | Challenger Lethality Improvement Programme | CLIP (qwarty) |
| abbr., astronaut., mil. | Combat Control System Improvements Program | CCSIP |
| mil., abbr. | Command Center Improvement Program | CCIP |
| abbr., scottish | Common Configuration Improvement Program | CCIP (USAF) |
| abbr., scottish | Component Improvement Program | CIP (USA) |
| el., abbr. | Continuous Improvement Program | CIP |
| ed., abbr. | Continuous Library Improvement Program | CLIP |
| physiol., abbr. | Coronary Health Improvement Program | CHIP |
| abbr. | Corridor Safety Improvement Program | CSIP (Georgy Moiseenko) |
| abbr., scottish | Craft Life Improvement Program | CLIP (US Navy) |
| abbr., scottish | DCS Mediterranean Improvement Program | DMIP |
| vet.med., abbr. | Deer Range Improvement Program | DRIP |
| abbr., scottish | Defense Acquisition Improvement Program | DAIP (USA) |
| mil., abbr. | Department of the Army Management Review and Improvement Program | DAMRIP |
| abbr., post | Distribution Quality Improvement program | DQI (2004- uses commercial databases to improve remote computer reader encode rates) |
| transp., abbr. | Driver Improvement Program | DIP |
| abbr., scottish | Echelon Above Corps Communications Improvement Program | EAC-CIP (US Army) |
| mil., abbr. | ELINT Improvement Program | EIP |
| mil., abbr. | ELlNT Improvement Program | EIP |
| abbr., post | Employee Assistance Program / Workplace Environment Improvement | EAP/WEI (offices merged 2003) |
| abbr., scottish | Enhanced System Improvement Program | ESIP (US Army) |
| el., abbr. | Equipment Improvement Program | EIP |
| abbr. | European Defence Improvement Program | EDIP |
| abbr., scottish | European Defence Improvement Programme | EDIP (NATO) |
| mil., abbr. | European Defense Improvement Program | EDIP |
| mil., abbr. | European Hawk Improvement Program | EHIP |
| mil., abbr. | Falcon Improvement Program | FIP |
| abbr., post | Flats Recognition Improvement Program | FRIP (2004 - 2009...) |
| mil., abbr. | Hawk European Limited Improvement Program | HELIP |
| abbr., scottish | HAWK European Limited Improvement Programme | HELIP |
| abbr., scottish | HAWK Improvement Program | HIP (USA) |
| abbr., scottish | HAWK Product Improvement Program | HAWK-PIP |
| mil., abbr. | H-Camera Spectral Improvement Program | H-SIP |
| abbr., scottish | High Frequency Improvement Programme | HFIP (NATO) |
| abbr., scottish | Howitzer Improvement Program | HIP (USA) |
| mil., abbr. | Howitzer Improvement Program On Board Fire Control System | HIP OBFCS |
| mil., abbr. | International Logistics Supply Performance Improvement Program | ILSPIP |
| mil., abbr. | Joint Analytic Model Improvement Program | JAMIP |
| abbr. | Joint Financial Management Improvement Program | JFMIP |
| abbr. | Maize Improvement Program | MIP (Ася Кудрявцева) |
| abbr., scottish | Marine Engineering Improvement Programme | MEIP (UK) |
| abbr., scottish | Marine Engineering Improvement Programme | MAIP |
| abbr., post | Methods Improvement Program - Standard Operating Procedures | MIP-SOP |
| UN, abbr. | Metropolitan Environment Improvement Programme | MEIP |
| abbr., scottish | Mirage System Improvement Programme | MirSIP (Belgium) |
| abbr., scottish | Missile Homing Improvement Program | MHIP (USA) |
| transp., abbr. | Mobilization Improvement Program | MIP |
| mil., abbr. | Multi Stage Improvement Program | MSIP |
| UN, abbr. | Multinational Staged Improvement Program | MSIP |
| abbr., scottish | Multinational Staged Improvement Programme | MSIP (US armed forces) |
| abbr., scottish | NATO AEW System Improvement Programme | NASIP |
| abbr., scottish | Naval Aviation Production Process Improvement Program | NAPPI (US DoD) |
| abbr., astronaut., mil. | Network Security Improvement Program | NSIP (Army) |
| busin., abbr. | Performance Improvement Program | PIP |
| abbr., scottish | Product Improvement Phase / Programme | PIP |
| abbr., mil. | Product Improvement Program USA army | PIP (to convert current M4 carbine into M4A1 Val_Ships) |
| mil., abbr. | Product Improvement Program | PIP (or Plan or Proposal) |
| abbr., mil., commer. | Product Improvement Proposal/Program | PIP |
| abbr., avia., med. | Program for the Improvement of Working Conditions and Environment | PIACT |
| abbr. | Program Improvement | PI (Alex Lilo) |
| abbr., qual.cont. | Quality Assessment and Improvement Program | QAIP (Программа оценки и улучшения качества Alexey Lebedev) |
| NASA, abbr. | Quality Improvement Program | QIP |
| abbr., scottish | Radar Sensitivity / System Improvement Program | RSIP (USA) |
| abbr., post | Recognition Improvement Program | RIP |
| abbr., tech. | Reliability Improvement Program | RIP (Vosoni) |
| abbr. | School Improvement Program | SIP |
| abbr., scottish | Secondary Improvement Programme | SIP |
| mil., abbr. | Secure Voice Improvement Program | SVIP |
| abbr., astronaut., mil. | Sensor System Improvement Program | SSIP |
| abbr., scottish | Sensor System Improvement Program | SSIP (USA) |
| abbr., astronaut., mil. | Space Surveillance Network Improvement Program | SSNIP |
| abbr., mil., commer. | Spares Management Improvement Program | SMIP |
| transp., abbr. | Statewide Transportation Improvements Program | STIP |
| abbr., astronaut., mil. | System Improvement Program | SIP |
| abbr., scottish | System Improvement Programme | SIP |
| abbr., astronaut., mil. | System Weapons Improvement Program | SWIP |
| abbr., scottish | Systems Weapons Improvement Program | SWIP (US DoD) |
| tech., abbr. | TACAMO improvement program | TIP |
| mil., abbr. | TACFIRE modular improvement program | TMIP |
| abbr., scottish | Technical Improvement Programme | TIP |
| energ.ind., abbr. | Technical Specification Improvement Program | TSIP |
| abbr., astronaut., mil. | Tomahawk Baseline Improvement Program | TBIP |
| abbr., scottish | Tomahawk Baseline Improvement Program | TBIP (USA) |
| abbr., scottish | Transit Improvement Program | TIP (USA) |
| transp., abbr. | Travel Model Improvement Program | TMIP |
| abbr., post | Vehicle Improvement Program | VIP (USPS database contains contract records on the purchases of all non-mail hauling vehicles for the Postal Service) |
| abbr., scottish | Vehicle Improvement Programme | VIP |
| USA | Vietnam Air Force Improvement and Modernization Program | VNAF I&M |
| mil., abbr. | Visitor Improvement Program | VIP |
| USA | Wage Index Improvement Program | WIIP |
| abbr., mil. | Warrior Fightability Lethality Improvement Programme | WFLIP (qwarty) |
| ecol., abbr. | Water Quality Improvement Grant Program | WQIGP |
| USA | Water Quality Improvement Program | WQIP |
| abbr., scottish | Weapons System Improvement Programme | WSIP |
| abbr. | Weight Improvement Program | WIP |
| univer., abbr. | Writing Skills Improvement Program | WSIP |
| abbr., post | Zone Improvement Program | ZIP (USPS Trademark) |
| abbr., post | Zone Improvement Program plus sector/segment 9 digit ZIP code | ZIP+4 (USPS Trademark) |
