ACHA Men's Division III consists of 140 teams in ten Conferences and Independents. These teams are also divided into four Regions (Atlantic, North, South, Pacific). A total of 16 teams qualify for the national tournament in the same manner as Division II.
- Atlantic Coast Collegiate Hockey League (ACCHL)
- College Hockey East (CHE)
- College Hockey South (CHS)
- Empire Collegiate Hockey Conference (ECHC)
- Indiana Collegiate Hockey Conference (ICHC)
- Metropolitan Collegiate Hockey Conference (MCHC) (Contains Non-ACHA members)
- Michigan Collegiate Hockey Conference (MCHC)
- Mid-American Collegiate Hockey Association (MACHA)
- Northeast Collegiate Hockey Association (NECHA)
- West Coast Hockey Conference (WCHC)
Defunct Leagues[]
(Incomplete)
- College Hockey Association (CHA) (Contained Non-ACHA members)
- East Coast Collegiate Hockey Association (ECCHA)
- East Florida Collegiate Hockey Conference (EFCHC)
- College Hockey South (original) (1998-2004)
- Delaware Valley Collegiate Hockey Conference (DVCHC; still active, just no longer AHCA DIII)
- Mason-Dixon Collegiate Hockey Association (MDCHA)
- Midwestern Collegiate Hockey Conference (MWCHC)
- North Central Collegiate Hockey Conference (NCCHA)
- Pacific Collegiate Hockey Conference (PCHA; moved up to DII)
- Southern Collegiate Hockey Conference (SCHC)