Fort Osage High School is a high school located at 2101 N. Twyman Rd. in unincorporated Jackson County, Missouri, in the Kansas City metropolitan area, adjacent to Independence. It belongs to the Fort Osage R-1 School District and serves a section of northern Independence. It currently serves approximately 1,500 students from grades 9-12. It is named after the Fort Osage National Historic Landmark along the Missouri River in nearby Sibley, Missouri.

Athletics

Fort Osage's baseball team has appeared in three 4A state championships having won in 1991 and 1997, and finishing as runners up in 1996. Since 2009, Fort Osage's football team has appeared in the Class 5 state championship game 5 times in 2009, 2012, 2015, 2018, and 2022. They won the state championship game in 2015.

Fall athletics

Winter athletics

Spring athletics

Spirit squads

Fort Osage activities

Fine Arts activities

Fort Osage Bands

Other fine arts

Clubs and other activities

Notable alumni