The John Philip Sousa Foundation is a non-profit foundation dedicated to the promotion of band music internationally. The foundation administers a number of projects and awards supporting high quality band performance, conducting, and composition.

John Philip Sousa was an American composer and conductor of the late Romantic era known primarily for American military marches. He is known as "The March King" or the "American March King", to distinguish him from his British counterpart Kenneth J. Alford. Among Sousa's best-known marches are "The Stars and Stripes Forever", "Semper Fidelis", "The Liberty Bell", "The Thunderer", and "The Washington Post".