| John Gilbert King | |
| Office: | Member of Parliament for King's County |
| Term Start: | 24 July 1865 |
| Term End: | 23 November 1868 |
| Predecessor: | Patrick O'Brien John Pope Hennessy |
| Alongside: | Patrick O'Brien |
| Successor: | Patrick O'Brien David Sherlock |
| Birth Date: | 1822 |
| Nationality: | Irish |
| Party: | Conservative |
| Parents: | Henry King Harriett Lloyd |
| Residence: | Ballylin House, King's County, Ireland |
John Gilbert King (1822 – 9 January 1901) was an Irish Conservative Party politician.
He was the son of Henry King and Harriett, daughter of John Lloyd, who had been a Member of the Irish House of Commons for King's County before the Act of Union. He inherited Ballylin House from his father in 1857 and, because he was unmarried with no children, this was passed to his nephew Henry Louis Mahon, son of Ross Mahon and Harriett King.
At the 1865 general election, he was elected to the House of Commons of the United Kingdom as one of the two Members of Parliament (MPs) for King's County. He stood down at the next election, in 1868.[1]
He was a Justice of the Peace and High Sheriff of King's County for 1852–53.