| Honorific-Prefix: | The Right Honourable |
| The Earl Cawdor | |
| Office1: | Lord Lieutenant of Carmarthenshire |
| Term Start1: | 1852 |
| Term End1: | 1860 |
| Predecessor1: | The 3rd Lord Dynevor |
| Successor1: | The 2nd Earl Cawdor |
| Office2: | Member of the House of Lords Lord Temporal |
| Term Start2: | 1821 |
| Term End2: | 1860 |
| Successor2: | The 2nd Earl Cawdor |
| Office3: | Member of Parliament for Carmarthen |
| Term Start3: | 1813 |
| Term End3: | 1821 |
| Predecessor3: | Sir George Campbell |
| Successor3: | John Jones of Ystrad |
| Nationality: | British |
| Alma Mater: | Eton College Christ Church, Oxford |
| Spouse: | Lady Elizabeth Thynne |
| Children: | 7 (including John Campbell, 2nd Earl Cawdor) |
| Father: | John Campbell, 1st Baron Cawdor |
| Mother: | Lady Caroline Howard |
John Frederick Campbell, 1st Earl Cawdor (8 November 1790 – 7 November 1860) was a British peer and MP.
He was born the son of John Campbell, 1st Baron Cawdor and Lady Caroline Howard and educated at Eton and Christ Church, Oxford, graduating BA in 1812. In 1827 he became Viscount Emlyn of Emlyn and Earl Cawdor of Castlemartin in the county of Pembroke.
In June 1812, he was elected a Fellow of the Royal Society.[1] That same year, he stood for election to the House of Commons for Pembrokeshire after the sitting member, Lord Milford, stood down in his favour. Campbell was, however, defeated by Sir John Owen of Orielton.
He was MP for Carmarthen from 1813 to 1821 and Lord Lieutenant of Carmarthenshire from 1817 to 1860. He died on the eve of his 70th birthday from a gangrenous infection from a carbuncle on his right arm at his family estate at Stackpole, Pembrokeshire.[2]
In 1831, at the Coronation of King William and Queen Adelaide, Earl Cawdor carried and presented the queen consort's ivory rod with dove.[3]
He married Lady Elizabeth Thynne, daughter of Thomas Thynne, 2nd Marquess of Bath and the Hon. Isabella Elizabeth Byng, on 5 September 1816. She had previously been engaged to George Sackville, 4th Duke of Dorset, who died shortly. They had seven children: