William Peters Latham, Sr. (4 January 1917 in Shreveport, Louisiana – 24 February 2004 in Denton, Texas) was an American composer and music educator.
Latham was educated in Kentucky, Ohio, and New York, completing degrees in composition and theory at the University of Cincinnati College-Conservatory of Music.
Latham taught theory and composition at the University of Northern Iowa from 1946 to 1965, attaining the rank of professor of music in 1959.
He retired from active service at UNT in June, 1984, and he was formally designated professor emeritus by the board of regents in November, 1984.
Latham composed 118 works; 62 have been published, 56 remain in manuscript, but all have been performed, many throughout the United States, Canada, Europe, and Japan.