Joseph Peter Kinneary (September 19, 1905 – February 14, 2003) was a United States federal judge.
Born in Cincinnati, Ohio, Kinneary graduated from St. Xavier High School in 1924, and received a B.A. from the University of Notre Dame in 1928 and an LL.B. from the University of Cincinnati College of Law in 1935. He was in private practice in Cincinnati and in Columbus, Ohio, from 1935 to 1961. He was an assistant state attorney general of Ohio from 1937 to 1939. He served as a captain in the United States Army during World War II. He was a lecturer at the University of Cincinnati College of Law in 1948. He was a first assistant state attorney general of Ohio from 1949 to 1951. He was a Special counsel in the office of the Ohio Attorney General from 1959 to 1961. He was a United States Attorney for the Southern District of Ohio from 1961 to 1966.
Kinneary was nominated by President Lyndon B. Johnson to fill the seat on the United States District Court for the Southern District of Ohio vacated by Mell Gilbert Underwood on June 28, 1966. Kinneary received confirmation in the United States Senate on July 22, 1966. He took the oath of office on August 5, 1966. He served as Chief Judge of the Southern District from March 2, 1973, to September 8, 1975. At the time of his retirement on August 31, 2001, he was the oldest active federal judge.
Judge Kinneary died February 14, 2003 at the age of 97.