NABS clubs are divided into four regions within the United States, the western region, the mid-west region, the southern region, and the northeastern region.
Each region is represented by a regional representative; the regional rep is the liaison between the club presidents and the NABS Executive Board.
Western Region
Arizona, California, Colorado, Idaho, Oregon, Montana, New Mexico, Nevada, Utah, Washington
Midwest Region
Illinois, Iowa, Indiana, Kansas, Nebraska, Michigan, Minnesota, Missouri, Nebraska, North & South Dakota, Ohio, Wisconsin
- Windy City Seals – Chicago, IL (1991)
- Michigan African-American Scuba Klub – Detroit, MI (1991)
- New Depth Dive Association
- Cincinnati Underwater Explorers
Southern Region
- Southern SeaQuestrians, Atlanta, GA (2014)
- Unicorns of Diving – Tampa, FL (2020)
- DIVERSe Orlando – Orlando, FL (1991)
- Nubian Dive Club of Houston – Houston, TX
- Black Coral Divers – Dallas, TX
Northeastern Region
Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, West Virginia, Vermont, Virginia, Washington DC
- Underwater Adventure Seekers – Washington, DC (1991)
- Atlantic Rangers – Philadelphia, PA (1991)
- Aquatic Voyagers Scuba Club – New York, NY (1991)
- Charm City Scuba Club – Baltimore, MD (2013)