Joseph Cotter may refer to: Joseph Henry Cotter (1872–1937), Canadian politician Joseph Bernard Cotter (1844–1909), American Roman Catholic bishop Joseph Seamon Cotter Jr. (1895–1919), American playwright, author and poet Joseph Seamon Cotter Sr. (1861–1949), American poet, writer, playwright, and community leader Joe Cotter (1877–1944), British trade union leader