Union High School may refer to:
United States Natchez Union High School, Natchez, Mississippi Redondo Union High School, Los Angeles, California Union High School (Modoc), Modoc, Indiana Union High School (Iowa), La Porte City, Iowa Union High School (Grand Rapids, Michigan) Union High School (Missouri), Union, Missouri Union High School (New Jersey), Union Township, Union County, New Jersey Union High School (Oklahoma), Tulsa, Oklahoma Union High School (Oregon), Union, Oregon Union High School-Main Street Grammar School, Union, South Carolina Union High School in Gallatin, Tennessee, a school for blacks Union High School (Utah), Roosevelt, Utah Union High School (Big Stone Gap, Virginia) Union High School (Camas, Washington) Union High School (Black River Falls, Wisconsin)
See also Union County High School (Georgia), Blairsville, Georgia Union County High School (Kentucky), Morganfield, Kentucky