| S/NO | Abbr. | Meaning |
| 1 | BAP | Baptist |
| 2 | BAP | Biodiversity Action Plan |
| 3 | BAP | Best Absolute Perfect (band) |
| 4 | BAP | Best Aquaculture Practices (seafood standards) |
| 5 | BAP | Beta Alpha Psi (National Honors Business Information Fraternity) |
| 6 | BAP | Battery-Assisted Passive |
| 7 | BAP | Bali Action Plan (UN Climate Change Conference; Bali, Indonesia) |
| 8 | BAP | Boost-a-Pump (Kenne Bell) |
| 9 | BAP | Best American Poetry |
| 10 | BAP | Balloon Angioplasty (heart disease) |
| 11 | BAP | Bandwidth Allocation Protocol |
| 12 | BAP | Branche d’Activite Professionnelle (French) |
| 13 | BAP | Business Accelerator Program (various locations) |
| 14 | BAP | Basketball Association of the Philippines |
| 15 | BAP | Breeder Award Program (various organizations) |
| 16 | BAP | British Association for Psychopharmacology |
| 17 | BAP | Blood Agar Plate (microbiology) |
| 18 | BAP | Black American Princess |
| 19 | BAP | British Association of Psychotherapists |
| 20 | BAP | Broader Autism Phenotype |
| 21 | BAP | Barometric Absolute Pressure (automotive engine computer) |
| 22 | BAP | Béton Autoplaçant (French: Self-Consolidating Concrete) |
| 23 | BAP | Best Available Price |
| 24 | BAP | Beneficiary Advisory Panel (US DoD) |
| 25 | BAP | Bienal de Arte Paiz (Guatemalan art) |
| 26 | BAP | Business Access Point (wireless communications) |
| 27 | BAP | Brevet d’Animateur Poney |
| 28 | BAP | Bankruptcy Assistance Project (New York) |
| 29 | BAP | Building America Program (US Department of Energy) |
| 30 | BAP | BenzoApyrene |
| 31 | BAP | Bonding Assistance Program |
| 32 | BAP | Buque Armada Peruana (Peruvian Navy Ship) |
| 33 | BAP | Baltimore Algebra Project (math literacy program) |
| 34 | BAP | Business Automobile Policy (insurance) |
| 35 | BAP | Book Arts Press (various locations) |
| 36 | BAP | Bachelier en Architecture Paysagiste (Bachelor of Landscape Architecture) |
| 37 | BAP | BiP-Associated Protein |
| 38 | BAP | Bulletin d’Analyse Phénoménologique (French: Phenomenological Analysis Bulletin; University of Liege; Belgium) |
| 39 | BAP | Benefits Analysis Program |
| 40 | BAP | Bicycles Against Poverty (est. 2007) |
| 41 | BAP | Balloon Aerial Photography |
| 42 | BAP | Brigade AntiPub (French anti-advertising group) |
| 43 | BAP | Best Achievable Protection |
| 44 | BAP | Bridge Adapter Pallet |
| 45 | BAP | Buurt Actie Partij |
| 46 | BAP | Building Architect Plus (game) |
| 47 | BAP | Boîte à Polpette (French role-playing game group) |
| 48 | BAP | Be A Pal |
| 49 | BAP | Banker’s Association of the Philippines |
| 50 | BAP | Bachelor of Arts in Psychology |
| 51 | BAP | Business Application Program |
| 52 | BAP | Basic Assembly Program |
| 53 | BAP | Butte, Anaconda, & Pacific Railway Company |
| 54 | BAP | Branch Arm Piping |
| 55 | BAP | Born Again Pagan |
| 56 | BAP | Baseline Activity Profile |
| 57 | BAP | Budget Allocation Plan |
| 58 | BAP | British Association of Planetariums |
| 59 | BAP | Basic Aborting Protocol |
| 60 | BAP | Beta Assessment Plan |
| 61 | BAP | Ballistic Artillery Projectile |
| 62 | BAP | Bredero Avrusnings Prosjekt |
| 63 | BAP | Bisexual and Proud |
| 64 | BAP | Bâtiment d’Accueil du Public (French: Public Reception Building) |
| 65 | BAP | Brake Application Pressure |
| 66 | BAP | Briefing Automation Package |
| 67 | BAP | Beagle Activation Probe (Mechwarrior) |
| 68 | BAP | Boric Acid Ponds |