Commercial diving: Surface supplied air training organizations

• International Diving Institute (http://www.InternationalDivingInstitute.com)

Recreational diving: Scuba training organizations

• aa - Aquanaut Academy International (http://www3.tokai.or.jp/diving-bell/aa.html in Japanese)
• ACUC - American and Canadian Underwater Certifications (http://www.acuc.org/)
• AED - Associated European Divers (http://www.aedivers.org/)
• ANDI - American Nitrox Divers International
• ANMP - Association nationale (Française) des moniteurs de plongée (http://www.anmp-plongee.com)
• ATEC - Association of Technical and Recreational Scuba Diving Instructors AG (http://www.atec.eu)
• AUSI - Associated Underwater Scuba Instructors (http://www.ausi.com.au/ )
• BSAC - British Sub Aqua Club (http://www.bsac.com/ )
• CEDIP - European Committee of Professional Diving Instructors (http://www.cedip.org/)
• CMAS - Confédération Mondiale des Activités Subaquatiques (http://www.cmas.org )
• FFESSM - Fédération Française d'Etudes et de Sports Sous-Marins (http://www.ffessm.fr/)
• FIAS - Federazione Italiana Attività Subacquee (http://www.fias.it)
• GUE - Global Underwater Explorers (http://www.gue.com/ )
• HSA - Handicap Scuba Association (http://www.hsascuba.com/)
• IADS - International Association of Diving Schools (http://www.iads.nl)
• IAHD - International Association for Handicapped Divers (http://www.iahd.org/ )
• IANTD - International Association of Nitrox and Technical Divers (http://www.iantd.com/ )
• IDEA - International Diving Educators Association(http://www.idea-scubadiving.com/)
• KPDR (КПДР) - Russian Confederation of Underwater Activities (http://www.diver.ru/)
• Los Angeles County - Los Angeles County Underwater Instructor Association (http://lascuba.com/index.html)
• NACD - National Association for Cave Diving (http://www.safecavediving.com/ )
• NASDS - National Association of Scuba Diving Schools (recently merged with SSI)
• NAUI - National Association of Underwater Instructors (http://www.naui.org/ )
• NOB - Nederlandse Onderwatersport Bond (http://www.onderwatersport.org/ )
• PADI - Professional Association of Diving Instructors (Padi.com)
• PDA - Professional Diving Association (http://www.pdaww.com/)
• PDIC - Professional Diving Instructors Corporation International (http://www.pdic-intl.com)
• SAA The Sub-Aqua Association (http://www.saa.org.uk/)
• SDI - Scuba Diving International (http://www.tdisdi.com )
• SRS - Sea Research Society (http://www.shipwrecks.com)
• SSAC The Scottish Sub Aqua Club (http://www.scotsac.com/)
• SSI - Scuba Schools International (http://www.ssiusa.com/ )
• UEF - Underwater Explorers' Federation (http://www.uef.hu/ )
• UDT - Universal Diver Training (http://www.udtintl.com/ )
• WOSD - World Organisation of Scuba Diving (http://www.wosd.com)
• YMCA - YMCA SCUBA (http://www.ymcascuba.org/ )

Technical diving Nitrox training organizations

• ANDI - American Nitrox Divers International (http://www.andihq.com)
• ATEC - Association of Technical and Recreational Scuba Diving Instructors (http://www.atec.eu)
• BSAC - British Sub Aqua Club (http://www.bsac.org/learn/technicl.htm)
• Dive Rescue International (http://www.diverescueintl.com)
• DSAT (http://www.padi.com/english/common/courses/tec/)
• GUE - Global Underwater Explorers (http://www.gue.com)
• IANTD - International Association of Nitrox and Technical Divers (http://www.iantd.com)
• NAUI Tec - National Association of Underwater Instructors (http://www.nauitec.com)
• PDIC (http://www.pdic-intl.com/)
• TDI - Technical Diving International (http://www.tdisdi.com)
• PSAI (http://www.mrscuba.com)
• UDT - Universal Diver Training (http://www.udtintl.com/ )
• DIRrebreather - Doing It Right / Rebreather(http://www.DIRrebreather.com)

Cave diving training organizations

• Cave Diving Group
• CDAA - Cave Divers Association of Australia (http://www.cavedivers.com.au)
• GUE - Global Underwater Explorers (http://www.gue.com)
• NACD - National Association for Cave Diving (http://www.safecavediving.com/ )
• NSS-CDS - National Speleological Society Cave Diving Section (http://www.nsscds.com/)

Other diving related organizations

• AISI- Association of Italian Diving Enterprises (http://www.assoimpresesub.it)
• AAUS - American Academy of Underwater Sciences
• Active Divers Association
• ARSBC - Artificial Reef Society of British Columbia
• BFDC and North Carolina SCUBA/Wreck Diving
• Chicago Aquanauts Scuba Association
• DAN - Divers Alert Network (http://www.diversalertnetwork.org/)
• DDRC - Diving Diseases Research Centre (http://www.ddrc.org)
• ERDI - Emergency Response Diving International
• EUF - European Underwater Federation (http://www.euf.eu)
• GLACD - Greater Los Angeles Council of Divers
• HSA International
• IADRS - International Association of Dive Rescue Specialists (http://www.iadrs.org)
• Israeli Diving Federation
• Malta Professional Diving Schools Association
• National Association of Black Scuba Divers
• Nautical Archaeology Society
• New York State Diver's Association
• Recreational Divers Association
• Sea Research Society - Shipwreck consulting & underwater archaeology (http://www.shipwrecks.com)
• UKSDMC - UK Sports Diving Medical Council (http://www.uksdmc.co.uk)
• USDDA - United States Dental Diving Association, Inc.
• GODIVECYPRUS - Cyprus Diver Training (http://www.godivecyprus.com/)
• Global Vision International - Diver Training combined with marine conservation (http://www.gvi.co.uk/)

Others

ANIS, DIWA, ESA, FIAS, FIPS, IADS, IDD, NASE, PDA, PSA, SUSV, TDI, TSA, VDST, VDTL, VIT, ÖSPV