Mace - One of the symbols of the President's Office.
Macey Russell Dinner - Event held every September wherein Black speakers are invited to speak before Trinity students, specifically athletes of color.
Marshal of the College - Person chosen to direct organized events, most notably Commencement.
Mascot - Trinity's mascot, the bantam.
Master Plan - Iterations of Trinity's plans for campus development including spatial layout and land use.
Mather Hall - Multipurpose building on campus that is a center for student activity, housing many meeting rooms and amenities, including the main dining hall.
Mather Hall Board of Governors - A student government organization created in 1961.
Matriculation - A ceremony which symbolizes a student's official start at the college.
McCook Academic Building - Campus building which houses classrooms and laboratories, an auditorium, and offices for multiple academic departments.
Medusa - A student governance group that originated as a secret honorary society in 1892.
Memorial Field House - Multipurpose athletic facility that features an indoor track, as well as indoor tennis courts.
Missionary Society - A student organization of a religious nature, founded circa 1831.
Motto - Short phrase representing Trinity College's ideals.
Museum of Natural History - A collection of natural history specimens, such as animal skeletons and minerals, that was displayed for study in Boardman Hall.