Diving Training Agencies
Recreational, technical, and freediving training agencies with their regions and official websites.
| Agency | Regions | Notes |
|---|---|---|
| PADIProfessional Association of Diving Instructors | Global | World's largest recreational agency; issues TecRec technical certifications.39 certifications |
| SSIScuba Schools InternationalFormerly NASDS (brand merged) | Global | Recreational + extended range (TXR) programs.18 certifications |
| NAUINational Association of Underwater Instructors | Global | Non-profit training agency with recreational and technical curricula.10 certifications |
| SDIScuba Diving International | Global | Recreational arm of the TDI/SDI family.16 certifications |
| TDITechnical Diving International | Global | Widely used technical agency for AN/DP, Trimix, CCR, etc.17 certifications |
| CMASConfédération Mondiale des Activités SubaquatiquesFormerly World Underwater Federation | Global (via national federations) | CMAS issues certifications via national member federations; include only those members that issue CMAS cards when adding regionals.4 certifications |
| BSACBritish Sub-Aqua Club | UK, Global (clubs) | Club-based training; also offers technical and leadership grades.5 certifications |
| RAIDRebreather Association of International Divers | Global | Recreational, technical, and rebreather training (OC & CCR).14 certifications |
| IANTDInternational Association of Nitrox and Technical Divers | Global | Early pioneer of nitrox and technical programs, OC & CCR trimix/cave.16 certifications |
| GUEGlobal Underwater Explorers | Global | Standardized team protocols; rec, tech, and cave curricula.12 certifications |
| UTDUnified Team Diving | Global | Team-centric approach; rec, tech, and overhead training paths.3 certifications |
| ANDIAmerican Nitrox Divers International | Global | Nitrox, tech, rebreather, and specialty programs (OC/CCR).1 certification |
| CDAACave Divers Association of Australia | Australia | Specialist cave diving certification agency.3 certifications |
| NSS-CDSNational Speleological Society — Cave Diving Section | USA, Global (instructors) | Cave diving training and certification in the USA and abroad.3 certifications |
| FFESSMFédération Française d'Études et de Sports Sous-Marins | France | French national federation; issues CMAS-standard certifications domestically.4 certifications |
| AIDA InternationalInternational Association for Development of Apnea | Global | Global freediving education and certification system.5 certifications |
| MolchanovsMolchanovs Movement | Global | Freediving wave system; global certification agency.4 certifications |
| Apnea AcademyApnea Academy | Global, Europe | Freediving training organization founded by Umberto Pelizzari; issues certifications.1 certification |
| ProTecProfessional Technical and Recreational Diving | Europe, Global | Technical, cave, and recreational courses.1 certification |
| ISEInnerSpace Explorers | Europe, Global | Technical and cave training agency with standardized protocols.1 certification |
| SwedTechSwedTech Diving | Europe | European technical training agency (OC/CCR).1 certification |
| ERDIEmergency Response Diving International | Global | Public safety diving and rescue/recovery training; part of TDI/SDI family.4 certifications |
| PFIPerformance Freediving International | Global | Freediving training and certification organization.3 certifications |
| EFREmergency First Response | Global | CPR, First Aid, and emergency care training; affiliated with PADI.3 certifications |
| DANDivers Alert Network | Global | Dive safety organization offering emergency oxygen, first aid, and diving safety courses.4 certifications |
| FRTIFirst Response Training International | Global | CPR, First Aid, and emergency care training. OSHA & ILCoR compliant standards.1 certification |
| ISCInternational Scuba Certification | Global | ISO accredited (audited by European Underwater Federation), CDWS Egypt approved, HSE UK approved. Offers 100% digital training and student record system.18 certifications |