Osawatomie High School (OHS) is a public high school in Osawatomie, Kansas, United States. It is operated by Osawatomie USD 367 school district. Its mascot is Trojans, and the school colors are red and white. The principal is Jeff White, and the assistant principal/athletic director is Wade Welch. Located at 1200 Trojan Drive, the current enrollment in grades 9-12 is 310 students.