| Office: | Judge of the Supreme Court |
| Term Start: | 1 July 1981 |
| Term End: | 14 January 1993 |
| Nominator: | Government of Ireland |
| Appointer: | Patrick Hillery |
| Order1: | 18th |
| Office1: | Attorney General of Ireland |
| Taoiseach1: | Jack Lynch Charles Haughey |
| Term Start1: | 6 July 1977 |
| Term End1: | 29 June 1981 |
| Predecessor1: | John M. Kelly |
| Successor1: | Peter Sutherland |
| Birth Date: | 11 August 1921 |
| Birth Place: | Naas, County Kildare, Ireland |
| Death Place: | Blackrock, Dublin, Ireland |
| Nationality: | Irish |
| Party: | Fianna Fáil |
| Education: | Castleknock College |
Anthony James Hederman (11 August 1921 – 10 January 2014) was an Irish judge and barrister who served as a Judge of the Supreme Court from 1981 to 1993 and Attorney General of Ireland from 1977 to 1981.
He was born on 11 August 1921 in Naas, County Kildare, Ireland.[1] He was educated at Castleknock College, a private Roman Catholic boys' school in Dublin where he developed a useful network of contacts.[2] [3] His contemporaries at school included the future Taoiseach Liam Cosgrave.[3] He went on to obtain an honours degree in legal and political science from University College Dublin. He was a member of Fianna Fáil and for a time in the 1960s was joint Honorary Treasurer of the party (along with Neil Blaney).
Hederman was called to the Bar in 1944.[4] He mainly undertook prosecutions and other State work.[1] He was Attorney General of Ireland from July 1977 to June 1981.[5] In 1981, he was appointed as a Judge of the Supreme Court of Ireland and served there until 1993. He was the sole dissenter in the X Case judgement. He was later appointed as the president of the Law Reform Commission.[6] He died in 2014. After his death the UCD Student Legal Service society named its annual moot court competition in honour of the late Mr Justice Hederman.[7]