Philip Leo Sullivan (October 2, 1889 – June 12, 1960) was a United States federal judge.
Born in Marengo, Illinois, Sullivan received an LL.B. from Loyola University Chicago School of Law in 1911. He was in private practice in Chicago, Illinois from 1911 to 1916. He was a Master in chancery, Superior Court of Cook County from 1916 to 1917. He was in the United States Army Lieutenant, Field Artillery from 1917 to 1919. He was a Master in chancery, Circuit Court of Cook County from 1919 to 1921. He was a judge on the Circuit Court of Cook County from 1921 to 1933.
Sullivan was a federal judge on the United States District Court for the Northern District of Illinois. Sullivan received a recess appointment from President Franklin D. Roosevelt on November 8, 1933, to a seat vacated by George E.Q. Johnson. Formally nominated on January 8, 1934. He was confirmed by the United States Senate on February 20, 1934, and received his commission on March 1, 1934. He served as chief judge from 1957-1959. Sullivan served in that capacity until June 12, 1960, due to his death.