Stilwell High School is a high school (grades 9–12) in Stilwell, Oklahoma, United States.
As of 2006, it had 615 students, of whom 70% were Native American, and some 38 teachers. The 1988-1989 class was the largest graduating class with a total of 181 graduates. The class of 2009–10 had the most honor students in its graduating class with 22.