Flint Southwestern Academy (FSA, Southwestern Academy, or Flint Southwestern) is located in Flint, Michigan, United States. This school is a part of the Flint Community Schools.

In 1989 Flint Academy closed and the school merged with Southwestern to become Flint Southwestern Academy. During the first year of the merger, the graduating class could choose what school was listed on their diploma: "Flint Academy", "Southwestern", or "Flint Southwestern Academy". The 2009 closing of Flint Central High School sent many former Flint Central High School students to Southwestern and led to the reopening of McKinley Middle School, which relieved potential overcrowding at Southwestern. Flint Southwestern Academy now serves grades 9–12.