James Simpson Jr.

James Simpson Jr. (January 7, 1905 – February 29, 1960) was a U.S. Representative from Illinois.

Born in Chicago, Illinois, Simpson attended St. Paul's School in Concord, New Hampshire from 1919 to 1922, Westminster School, Salisbury, Connecticut from 1922 to 1925, and was later a student at Harvard University. He served as director of Marshall Field & Co. from 1931 to 1960.

Simpson was elected as a Republican to the Seventy-third Congress (March 4, 1933 – January 3, 1935). He was an unsuccessful candidate for renomination in 1934. He was admitted to the Illinois bar in 1939. He was owner and operator of farms near Wadsworth, Illinois, and Rapidan, Culpeper County, Virginia. He entered the United States Marine Corps in 1943 and served thirty-six months, with twenty-four months in the Pacific area, and was discharged as a captain. He was a civilian aide to Secretary of the Army Robert Stevens in 1953 and 1954.

He died at his farm near Wadsworth, Illinois, February 29, 1960. He was interred in Graceland Cemetery, Chicago.