The Greenbrier Military School was a boys-only, private, military, boarding high school located in Lewisburg, West Virginia. It was founded in 1812.
It closed in 1972. The campus was then converted into the West Virginia School of Osteopathic Medicine, making that school the only medical school in the United States with a cannon on its campus.
The school's alumni fund a scholarship at the osteopathic college.
The Greenbrier Military School Alumni Association directs and funds the Greenbrier Leadership Institute, delivering principle based leadership programs to high schools throughout West Virginia.