Lewis Cass High School is a high school located in Walton, Indiana, United States.

High School before a reorganization of Thompson Elementary, Galveston Elementary, and the middle school resulted in all schools in the corporation bearing the Lewis Cass name.

Lewis Cass athletic teams currently compete in the Hoosier Athletic Conference, following the disbanding of the Mid-Indiana Conference in 2015, and will compete in the Three Rivers Conference starting with the 2023-2024 school year.

The 2002-2003 Kings boys basketball team finished the season with a 26-0 record to become the 8th team in state history to have an undefeated season.

[2] The Kings have won 3 IHSAA state championships.