Legacy High School may refer to:
- Legacy High School (Arizona), also known as Wickenburg Christian Academy, in Wickenburg, Arizona
- Legacy High School (Broomfield, Colorado)
- Legacy High School (Marysville, Washington)
- Legacy High School (Midland, Texas)
- Legacy High School (North Dakota) in Bismarck, North Dakota
- Legacy High School (North Las Vegas, Nevada)
- Legacy High School (South Gate, California)
- Legacy High School (Vancouver, Washington)
- The Child School/Legacy High School in Roosevelt Island, New York
- Mansfield Legacy High School in Mansfield, Texas (Dallas-Fort Worth Area)
- Southwest Legacy High School in San Antonio, Texas
- Tyler Legacy High School in Tyler, Texas