The 1993 NCAA Division I-AA football season, part of college football in the United States organized by the National Collegiate Athletic Association at the Division I-AA level, began in August 1993, and concluded with the 1993 NCAA Division I-AA Football Championship Game on December 18, 1993, at Marshall University Stadium in Huntington, West Virginia. The Youngstown State Penguins won their second I-AA championship, defeating the Marshall Thundering Herd by a score of 17−5.^[1] It was the third consecutive year that Marshall and Youngstown State faced off in the I-AA title game.

• A 1991 NCAA rule change required athletic programs to maintain all of their sports at the same division level by the 1993 season. In order to comply, 28 Division I programs with football teams at the Division II and Division III levels were forced to upgrade their programs to the Division I level, and all of them (at least initially) chose Division I-AA as their new football home.
• The rule change led directly to the establishment of the Pioneer Football League, a non-scholarship football conference at the Division I-AA level with six founding members, all of which had played in Division II or III: Butler, Dayton, Drake, Evansville, San Diego, and Valparaiso.
• It also led to the creation of the American West Conference, initially a football-only conference at the Division I-AA level with five founding members, all formerly in Division II: UC Davis, Cal Poly, Cal State Northridge, Sacramento State, and Southern Utah.^[2]
• The Metro Atlantic Athletic Conference, an existing Division I conference, also began sponsoring football in order to accommodate these new I-AA football programs.

+ The UC Davis Aggies, although a member of the new American West Conference, were listed in Division II polls,^[3] and participated in the Division II postseason.^[4]