MCAC may refer to: Chesapeake Detention Facility, formerly the Maryland Correctional Adjustment Center Manitoba Colleges Athletic Conference in Canada McMichael Canadian Art Collection, a art museum in Vaughan, Ontario, Canada Merced County Arts Council, art council in California, USA Metropolitan Collegiate Athletic Conference, former American college sports conference of the National Collegiate Athletic Association Middlesex County Automobile Club, motor club in England Midlands Collegiate Athletic Conference, former American college sports conference of the National Association of Intercollegiate Athletics Midwest Conference, an NCAA Division III athletic conference known as the Midwest Collegiate Athletic Conference from 1921 to 1994 Minnesota College Athletic Conference, an American college sports conference of the National Junior College Athletic Association