John Finley Williamson (June 23, 1887 in Canton, Ohio – May 28, 1964 in Toledo, Ohio) was the founder of Westminster Choir and co-founder of Westminster Choir College. He is considered to be one of the most influential choral conductors of the twentieth century. He was described by The New York Times as the "dean of American choral directors." He was a 1925 initiate of the Alpha Theta Chapter of Phi Mu Alpha Sinfonia Fraternity, the national fraternity for men in music, at Miami University.