| Office: | Teachta Dála |
| Term Start: | February 1982 |
| Term End: | June 1997 |
| Term Start1: | June 1977 |
| Term End1: | June 1981 |
| Constituency1: | Cavan–Monaghan |
| Term Start2: | February 1973 |
| Term End2: | June 1977 |
| Constituency2: | Monaghan |
| Office3: | Seanad |
| Term Start3: | 8 October 1981 |
| Term End3: | 18 February 1982 |
| Constituency3: | Administrative Panel |
| Birth Date: | 5 June 1927 |
| Birth Place: | Smithborough, County Monaghan, Ireland |
| Death Place: | Smithborough, County Monaghan, Ireland |
| Party: | Fianna Fáil |
| Nationality: | Irish |
| Spouse: | Tess Leonard[1] |
| Children: | 5, including Ann Leonard |
James Leonard (5 June 1927 – 13 April 2022)[2] was an Irish Fianna Fáil politician.[3] Leonard was first elected to Dáil Éireann as a Fianna Fáil Teachta Dála (TD) for the Monaghan constituency at the 1973 general election. He was re-elected for the Cavan–Monaghan constituency at the 1977 general election. He lost his seat at the 1981 general election but was elected to Seanad Éireann by the Administrative Panel. He regained his Dáil seat at the February 1982 general election and retained it until retiring at the 1997 general election.[4]
After his retirement, his daughter Ann Leonard unsuccessfully stood for his seat as a Fianna Fáil candidate at the 1997 general election. She was then nominated by the Taoiseach to the Seanad.