They participate in the NCAA Division III Southern Athletic Association.
=== History ===
In 1953, the Bengal Lancer fraternity sought to attain a live tiger as the school mascot. Members negotiated with the San Antonio Zoo to house the tiger, and Lee Roy Pletz, a local builder, along with the support of Tom Slick, acquired and transported the tiger from California to San Antonio. Lee Roy the tiger (and later Queenie, his girlfriend tiger) would run laps around the football field after each touchdown. In 1962, the tiger passed away, and the school discontinued the use of a live tiger as a mascot.
In November 2015, Trinity and Austin College announced they would affiliate with the Southern Athletic Association for football in 2017. This alliance renewed a relationship that ended when the SAA schools split from the SCAC. As a result, the SCAC will no longer offer football as a sport.
In 2023, Trinity University announced it would be moving all sports to the Southern Athletic Association. Trinity completed the …