| Subject | English | Thesaurus |
| mil., abbr. | Advanced Sensor Applications Program | ASAP |
| el., abbr. | Advanced Stepper Application Program | ASAP |
| mil., abbr. | Advanced Turbine Technology Application Program | ATTAP |
| energ.ind., abbr. | Advanced Water Breeder Applications Program | AWBA |
| abbr., Makarov. | Advisory Committee on Climate Applications and Data Program | ACCAD |
| ecol., abbr. | Advisory Committee on Climate Applications Program | ACCAD |
| busin., abbr. | Alcatel Application Partner Program | AAPP |
| astr., abbr. | Apollo Application Program | AAP |
| abbr. | Apollo Applications Program | AAP (программа по применениям КА "Аполлон" (НАСА) Углов) |
| abbr., astronaut. | Application Development and Research Opportunity Programme | ADRO (RADARSAT) |
| IT | application program | A program that processes business data through activities such as data entry, update or query (Contrasts with systems programs, such as an operating system or network control program, and with utility programs such as copy or sort) |
| abbr., comp. | application program | app (Andrey Truhachev) |
| telecom., abbr. | Application Program | AP |
| abbr., post | Application Program Interface | API (standard software interface to a computer program) |
| IT, abbr. | Application Program Interface | API (API) |
| abbr., file.ext. | Application Program Interface | API |
| abbr., file.ext. | Application Program Interface file | API (Adobe Acrobat) |
| IT, abbr. | Application Program to Program Converter | APPC (IBM) |
| IT, abbr. | Application Program to Transaction Manager | APTM (TP) |
| abbr., file.ext. | Application Programs | AP |
| IT, abbr. | Application Transaction Program | ATP (IBM, APPC) |
| telecom., abbr. | Application Transaction Program | ATP |
| abbr. | Automated Staffing Application Program | ASAP |
| IT, abbr. | Biometric Application Program Interface | BAPI (API, MS) |
| ecol., abbr. | Climate Applications Program | CAP |
| IT, abbr. | Common Speller Application Program Interface | CSAPI (API) |
| IT, abbr. | Communication Application Program Interface | CAPI (ISDN, API) |
| el., abbr. | Defence Systems Application Program | DSAP |
| mil., abbr. | Defense General Intelligence Applications Program | DGIAP |
| mil., abbr. | Defense Satellite Communications Systems Application Program | DSAP |
| mil., abbr. | Defense Sensor Imagery Application Training Programs | DSIATP |
| mil., abbr. | Defense Sensor Interpretation and Application Training Program | DSIATP |
| abbr., scottish | Dual Use Applications Program | DUAP (DARPA) |
| ecol., abbr. | Earth and Ocean Physics Application Program | EOPAP |
| IT, abbr. | eXtended Messaging Application Program Interface | XMAPI (API) |
| abbr. | external application program | external app program (ssn) |
| abbr., file.ext. | Family Application Program Interface | FAPI |
| abbr., astronaut. | Geological Applications of Remote Sensing programme | GARS (UNESCO) |
| abbr., IT | High-Level Language/Application Program Interface | HLLAPI |
| IT, abbr. | Human Authentication Application Program Interface | HAAPI (API) |
| IT, abbr. | Human Authentication Application Program Interface | HA-API (API) |
| abbr., comp., net. | Integrated Database Application Program Interface | IDAPI |
| abbr., file.ext. | Java Management Application Program Interface | JMAPI |
| abbr., file.ext. | License Services Application Program Interface | LSAPI |
| IT, abbr. | Licensed Services Application Program Interface | LSAPI (MS, API) |
| IT, abbr. | Lightweight Directory Access Protocol Application Program Interface | LDAPAPI (LDAP, RFC 1823, API) |
| IT, abbr. | Lightweight Directory Access Protocol Application Program Interface | LDAP API (LDAP, RFC 1823, API) |
| tech., abbr. | Machine and Display Application Program | MDAP |
| abbr., astronaut., mil. | Mail Application Program Interface | MAPI (Internet) |
| IT, abbr. | Messaging Application Program Interface | MAPI (MS, WOSA, API) |
| abbr., astronaut., mil. | National Advanced Remote Sensing Application Program | NARSAP |
| abbr., comp., net. | Native ATM Application Program Interface Connection | API connection |
| softw., abbr. | Network Application Program | NAP |
| abbr., IT | Network Application Program Interface | NAPI |
| mil., abbr. | Network Program Determination Application | NPDA |
| IT, abbr. | Queue Application Program Interface | QAPI (SAP, API) |
| abbr., scottish | Range Applications Joint Program Office | RAJPO (USA) |
| mil., abbr. | Range Applications Joint Program Office | RAJPO |
| abbr., scottish | Rapid prototype of Application Specific Signal Processor programme | RASSP (USA) |
| mil., abbr. | Space Applications Technology Program | SATP |
| abbr., file.ext. | Speech Application Program Interface | SAPI (Microsoft) |
| abbr., comp. | Speech Recognition Application Program Interface | SRAPI (Vosoni) |
| abbr., file.ext. | Structured N-Dimensional Application Program Interface | SNAPI (Oracle) |
| comp., abbr. | System Application Program | SAP |
| IT, abbr. | TALigent Application Program | TALAE (Taligent) |
| abbr., scottish | Technology Application Programme Management | TAPM |
| IT, abbr. | Telephony Application Program Interface | TAPI (Intel, MS, WOSA, CTI) |
| IT, abbr. | Telephony Services Application Program Interface | TSAPI (AT&T - Novell) |
| abbr., file.ext. | Telephony Services Application Program Interface | TSAPI (AT&T and Novell) |
| el., abbr. | Tool Application Program | TAP |
| abbr., scottish | Training Technology Application Program | TTAP (USA) |
| IT, abbr. | Voyetra Applications Program Interface | VAPI (API) |
| abbr., file.ext. | Web Site Application Program Interface | WSAPI (O'Reilly) |
| abbr., astronaut. | World Climate Applications and Services Programme | WCASP (proposed title, WMO) |
| abbr., file.ext. | X.400 Application Program Interface Association | XAPIA |
