| John Hart Terry | |
| Image Name: | John H. Terry, 1972.jpg |
| State1: | New York |
| Party: | Republican |
| Term Start1: | January 3, 1971 |
| Term End1: | January 3, 1973 |
| Preceded1: | James M. Hanley |
| Succeeded1: | Frank Horton |
| Office2: | Member of the New York State Assembly |
| Term Start2: | January 1, 1963 |
| Term End2: | December 31, 1970 |
| Predecessor2: | George P. Savage |
| Successor2: | Thomas J. Murphy |
| Office3: | Member of the Onondaga County Board of Supervisors |
| Term Start3: | 1948 |
| Term End3: | 1958 |
| Birth Date: | 14 November 1924 |
| Birth Place: | Syracuse, New York, U.S. |
| Death Place: | Syracuse, New York, U.S. |
| Spouse: | Catherine Jean Terry |
| Children: | 4 |
| Occupation: | Lawyer |
| Alma Mater: | University of Notre Dame Syracuse University College of Law |
John Hart Terry (November 14, 1924 – October 20, 2001) was an American lawyer and politician from New York.
Terry was born on November 14, 1924, in Syracuse, New York and graduated from Most Holy Rosary in 1941. He graduated from the University of Notre Dame in 1945, and LL.B. from Syracuse University College of Law in 1948. He served in the United States Army from 1943 until 1946 and received a Bronze Star and a Purple Heart for his service during World War II. He married Catherine Jean; and they had three daughters: Lynn, Susan and M. Carole. He also adopted his wife's daughter C. Jean Phelan Terry whose father was killed in World War II.
He was a member of the Board of Supervisors of Onondaga County from 1948 to 1958. He was Assistant Secretary to the Governor of New York from 1959 to 1961. He was a member of the New York State Assembly from 1963 to 1970, sitting in the 174th, 175th, 176th, 177th and 178th New York State Legislatures. He was elected as a Republican to the 92nd United States Congress, holding office from January 3, 1971, to January 3, 1973.
After leaving Congress Terry was Senior Vice President, General Counsel and Secretary of the Niagara Mohawk Power Corporation. After leaving Niagara Mohawk in 1987 he returned to practicing law in Syracuse. In retirement he resided in Syracuse and Vero Beach, Florida. He died on October 20, 2001; and was buried at Saint Mary's Cemetery in DeWitt, New York.