Theodore F. Morse (April 13, 1873 – May 25, 1924) was an American composer of popular songs.Born in Washington, D.C., Morse was educated at the Maryland Military & Naval Academy. He went on to study both violin and piano. He and his wife, Theodora Morse, became a successful songwriting team for Tin Pan Alley. Listed as Terriss & Morse, they were one of the earliest Tin Pan Alley husband-wife songwriting teams.Morse died from pneumonia in New York City on May 25, 1924.