Joseph Edgar Maddy (October 14, 1892 – April 18, 1966) was a pioneering American music educator and conductor. He was born in Wellington, Kansas where both of his parents were teachers. He attended in Wichita, Kansas where he studied violin and later joined the Minneapolis Symphony Orchestra. He was also the first music supervisor of instrumental music in America in 1918 in Rochester, New York. After a short time in Rochester, he was encouraged by Will Earhart to take a job at Morton High School in Richmond, Indiana to revive the outstanding school and community music program Earhart had developed there some years earlier. He remained in Richmond for four years.