William L. Bliss (December 13, 1876 – January 29, 1969) was appointed as justice of the Iowa Supreme Court on September 27, 1932 following the retirement of Justice John M. Grimm.
He resigned his position following 1932 election, returning to private practice in Mason City.
He was elected on January 1, 1939 and stay on the court until his retirement on April 16, 1962.
He graduated from Drake University Law Department in 1902 and began private practice in Britt.
He moved to Mason City in 1914 where continued his private practice.