Edward William Day (May 24, 1901 – October 22, 1985) was a United States federal judge.
Born in Cranston, Rhode Island, Day received a Ph.B. from Brown University in 1922 and an LL.B. from Harvard Law School in 1925. He was in private practice in Providence, Rhode Island from 1925 to 1930. He was a Clerk, Eighth District Court of Rhode Island from 1929 to 1930. He was a First assistant state attorney general of Rhode Island from 1930 to 1933. He was a City solicitor, Cranston, Rhode Island from 1935 to 1943. He was a Chairman, Rhode Island Civil Service Commission from 1939 to 1941.
Day was a federal judge on the United States District Court for the District of Rhode Island. Day received a recess appointment from Dwight D. Eisenhower on November 10, 1953, to a seat vacated by Edward L. Leahy. Formally nominated on January 11, 1954. He was confirmed by the United States Senate on February 9, 1954, and received his commission the same day. He served as chief judge from 1966-1971. He assumed senior status on March 19, 1976. He served on the bench until his death.