| John Joseph O'Connell | |
| Office: | Judge of the United States Court of Appeals for the Third Circuit |
| Term Start: | October 11, 1945 |
| Term End: | December 16, 1949 |
| Appointer: | Harry S. Truman |
| Predecessor: | Seat established by 58 Stat. 796 |
| Successor: | Austin Leander Staley |
| Birth Name: | John Joseph O'Connell |
| Birth Date: | 8 September 1894 |
| Birth Place: | Pittsburgh, Pennsylvania |
| Education: | Duquesne University (BS) Duquesne University School of Law (LLB) |
John Joseph O'Connell (September 8, 1894 – December 16, 1949) was a United States circuit judge of the United States Court of Appeals for the Third Circuit.
Born in Pittsburgh, Pennsylvania, O'Connell received a Bachelor of Science degree from Duquesne University in 1928, and a Bachelor of Laws from Duquesne University School of Law in 1931. He served in the United States Navy during World War I from 1918 to 1919. He entered private practice in Pittsburgh from 1931 to 1936. He was an assistant solicitor for Allegheny County, Pennsylvania from 1936 to 1943. He was solicitor for Allegheny County from 1944 to 1945.
O'Connell was nominated by President Harry S. Truman on September 12, 1945, to the United States Court of Appeals for the Third Circuit, to a new seat authorized by 58 Stat. 796. He was confirmed by the United States Senate on October 3, 1945, and received his commission on October 11, 1945. His service terminated on December 16, 1949, due to his death.