John Patrick Cody, later John Cardinal Cody, (December 24, 1907 - April 25, 1982) was the eleventh bishop (sixth archbishop) of the Roman Catholic diocese of Chicago, serving from 1965 to 1982 (succeeded Albert Cardinal Meyer).

He was born on December 24, 1907 in Saint Louis, Missouri to a family of Irish ancestry, and ordained a priest on December 8, 1931. On May 14, 1947 he was appointed Auxiliary Bishop in the Archdiocese of Saint Louis, Missouri where he was ordained a bishop on July 2, 1947. He was appointed Coadjutor to the Bishop of Saint Joseph, Missouri on January 27, 1954. He was appointed Bishop of Kansas City-Saint Joseph, Missouri on August 29, 1956 and installed October 11, 1956. He was appointed Coadjutor to the Archbishop of New Orleans, Louisiana on August 14, 1961, appointed Apostolic Administrator on June 1, 1962 and acceded to the See of New Orleans on November 8, 1964.

Cody was appointed Archbishop of Chicago, on June 16, 1965 and installed August 24, 1965. He was elevated to Cardinal on June 26, 1967. Cody's time in Chicago was marked by strife and controversy. Cody did not get along with the priests of his diocese, and some of his actions were questionable. While the Vatican normally receives letters from a few individuals in every diocese that are critical of their Bishop, in Chicago many important area Catholics were the ones writing to the Vatican to express their concerns over Cody's administration. His actions led Vatican officials, including the Pope, to be concerned over the state of the Chicago Archdiocese.

Cody died from a heart attack at the age of 74. He is interred in the Bishops’ Mausoleum at Mt. Carmel Cemetery, Hillside, Illinois. Cardinal Cody was succeded by Joseph Cardinal Bernardin.

see also List of Roman Catholic Bishops and Archbishops of Chicago