Moscow High School (MHS) is a four-year public high school in Moscow, Idaho, United States. The flagship school of the Moscow School District serves grades 9–12. Since 2013, Erik Perryman has served as principal. MHS colors are red, black, and white, and the mascot is a bear.

Moscow is a city and the county seat of Latah County, Idaho. Located in the North Central region of the state along the border with Washington, it had a population of 25,435 at the 2020 census. Moscow is the home of the University of Idaho, the state's land-grant institution and primary research university.