Mid-Atlantic Collegiate Hockey Association

The Mid-Atlantic Collegiate Hockey Association (MACH) is a college ice hockey league based in the Southeastern region of the United States. The conference is part of the American Collegiate Hockey Association Division 2 and is made up of eight teams from colleges and universities based in Delaware, Maryland, New Jersey, New York, Pennsylvania, and Virginia.

Format
Each team plays every team in their division twice throughout the season. Only divisional games are counted towards standings. The four teams from each division with the most points at the end of the season qualify for league playoffs. The two divisional playoff champions meet to determine the league championship. League and non-conference games are taken into consideration to qualify for the ACHA Division II Regional & National Tournaments.

Member Clubs
Of the eight member schools, six compete at the Division I level of NCAA and two at Division III. Stevenson University joined the conference in 2017 following the launch of its own club men's ice hockey program.

''Note: Penn State has an NCAA Division I hockey team competing in the Big Ten Conference. Stevenson has an NCAA Division III hockey team competing in the ECAC West''

Former members

 * Army moved to the Super East Collegiate Hockey League in 2018
 * Monmouth University moved to the Colonial States College Hockey Conference
 * St. Joseph's University moved to the Atlantic Coast Collegiate Hockey League
 * Temple University moved to ACHA Division I
 * UMBC folded their program in 2017, Rebirthed in 2019 in DVCHC DIII
 * Virginia Tech moved to the Atlantic Coast Collegiate Hockey League
 * Wagner College folded their program in 2018
 * Millersville University Currently in the Colonial States College Hockey Conference
 * Montclair State University moved to the Super East Collegiate Hockey League
 * The College of New Jersey Joined GNCHC, then moved to the Colonial States College Hockey Conference in 2014
 * Princeton University Joined GNCHC, then moved to the Colonial States College Hockey Conference in 2014
 * University of Pennsylvania Joined GNCHC, then moved to the Colonial States College Hockey Conference in 2014
 * William Paterson University moved to the Super East Collegiate Hockey League then moved to ACHA Division I
 * Seton Hall University Joined GNCHC, then moved to the Colonial States College Hockey Conference in 2014
 * Lafayette College Joined GNCHC, then moved to the DVCHC DII
 * East Carolina University Currently in ACHA DIII
 * Kennesaw State University Currently in South Eastern Collegiate Hockey Conference in ACHA DIII