• IADI - Independent Association of Dive Instructors

Commercial

• CADC - Canadian Association of Diving Contractors
• CWDI - Canadian Working Divers Institute
• NAOCD - National Association of Commercial Diving

Equipment Servicing

• ASSET - Association of Scuba Service Engineers and Technicians
• PSI - Professional Scuba Inspectors (cylinder examinations)

Public Safety

• Dive Rescue International
• Life Guard Systems

Recreational Diving

• BSAC - British Sub-Aqua Club (new address)
• BSAC - British Sub-Aqua Club (old address??)
• CFT - Comhairle Fo-Thuinn (Irish Underwater Council)
• PADI - Professional Association of Dive Instructors
• SAA - Sub-Aqua Association
• SSAC - Scottish Sub-Aqua Club

Recreational Diving - International

• ACUC - American Canadian Underwater Certification
• AISE - Association of Independent Scuba Educators
• ASDA - Advanced Scuba Diving Association
• CBPDS - Confederation Brasileanos de Pesca e Desportos Subaquaticos
• CEDIP - European Committee of Prefessional Diving Instructors
• CSUDP - California University State Diving Programme
• CMAS - Confederation Mondiale des Activites Subaquatique
• CIPP - Compagnie des Instucteurs Professionnels de Plongee
• IDEA - International Diving Educators Association (Europe)
• IDF - Israeli Diving Federation
• NASDS - National Association of Scuba Diving Schools
• NASE - National Association of Scuba Educators
• NASDS - National Association of Scuba Diving Schools
• NAUI - National Association of Underwater Instructors
• PDIC - Professional Diving Instructors Corporation
• SDI - Scuba Divers International
• SSI - Scuba Schools International (SSI Europe, SSI UK)
• YMCA - Young Men's Christian Association

Technical Diving

• ANDI - American Nitrox Divers Incorporated
• CDAA - Cave Divers Association of Australia
• GUE - Global Underwater Explorers, new agency based on work of WKPP and Jarod Jablonski
• IANTD - International Association of Nitrox and Technical Divers
• NACD - National Association for Cave Diving
• NSS-CDS - National Speleological Society Cave Diving Section
• NAUI Tec - National Association of Underwater Instructors
• PSA - Professional Scuba Association
• TDI - Technical Divers International