Mid-Atlantic Collegiate Hockey Association

The Mid-Atlantic Collegiate Hockey Association (MACH) was a college ice hockey league based in the Southeastern region of the United States. The conference was part of the American Collegiate Hockey Association Division 2 and finished the 2022-2023 season with five teams from colleges and universities based in Delaware, Maryland, New Jersey and Pennsylvania.

Format
Each team plays every team in their division twice throughout the season. Only divisional games are counted towards standings. All five teams, regardless of point total, are eligible to qualify for league playoffs. The 4th and 5th seeds play in a wildcard match, to see who advances to the playoffs. The two winners of the semifinal games 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. At the end of the 2022-2023 season, it was announced that the league would fold due to undisclosed reasons.

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

Note: Stevenson has an NCAA Division III hockey team competing in the UCHC

Former members

 * Army moved to the SECHL in 2018
 * Monmouth University moved to the CSCHC; folded their program in 2022
 * St. Joseph's University moved to the ACCHL
 * Temple University moved to ACHA Division I
 * UMBC folded their program in 2017, rebirthed in 2019 in DVCHC; now in the ACCHL
 * Virginia Tech moved to the ACCHL
 * Wagner College folded their program in 2018
 * Millersville University Currently in the CSCHC
 * Montclair State University moved to the SECHL
 * The College of New Jersey Joined GNCHC, then moved to the CSCHC in 2014; now ACHA Division I
 * Princeton University Joined GNCHC, then moved to the CSCHC in 2014; now in the ACCHL
 * University of Pennsylvania Joined GNCHC, then moved to the CSCHC in 2014
 * William Paterson University moved to the SECHL; now in ACHA Division I
 * Seton Hall University Joined GNCHC, then moved to the CSCHC in 2014
 * Lafayette College Joined GNCHC, then moved to the DVCHC of the AAU
 * East Carolina University Currently in the ACCHL
 * Kennesaw State University Currently in College Hockey South of the AAU
 * Penn State Currently in the ACCHL
 * Rowan University Currently in the ACCHL
 * Liberty University Currently ACHA Division II Independent
 * Rider University Currently in the ACCHL
 * Stevenson University Currently in the ACCHL
 * University of Delaware Currently in the ACCHL
 * University of Maryland Currently in the ACCHL
 * Drexel University Currently in the CSCHC