Fort Mill High School (FMHS) is a public high school in Fort Mill, South Carolina, United States.

It is part of the York County School District 4.

Two-time National Blue Ribbon School – 2004, 2018[3] 24 South Carolina Marching Band State Championships: 3-time Bands of America Regional Champion: Akron, Ohio in 2011, Powder Springs, Georgia in 2015, and Winston-Salem, NC in 2017.

The Fort Mill High School Marching Band has also been featured in the Macy's Thanksgiving Parade, The Pasadena Rose Parade, has traveled to Dublin, Ireland to perform in the 2013 and 2023 St. Patrick's Parade, and performed at the American Military Cemetery in Normandy, France in 2016.

This South Carolina school-related article is a stub.