Hokkaido Muroran Sakae High School (北海道室蘭栄高等学校, Hokkaidō Muroran Sakae Kōtō Gakkō) is a high school in Muroran, Hokkaidō, Japan, founded in 1917. Hokkaido Muroran Sakae High School is one of the high schools administered by Hokkaido.
The school is operated by the Hokkaido Prefectural Board of Education.