Marion-Franklin High School (MFHS, Marion) is a four-year high school (grades 9–12) located on the south side of Columbus, Ohio, at 1265 Koebel Road.

Marion-Franklin is one of 17 traditional high schools in the Columbus City Schools district.

The school mascot is the Red Devil.

Several district employees were caught altering attendance records for struggling students in order to improve performance ratings.

Because of this, former principal Pamela K. Diggs was fired in early 2014.