| Honorific-Prefix: | The Right Honourable |
| The Earl Cawdor | |
| Office: | Pembrokeshire County Councillor for Castlemartin |
| Term Start: | 1889 |
| Term End: | 1889 |
| Office1: | Lord Lieutenant of Carmarthenshire |
| Term Start1: | 1861 |
| Term End1: | 1898 |
| Predecessor1: | The 1st Lord Cawdor |
| Successor1: | Sir James Williams-Drummond, 4th Baronet |
| Monarch1: | Victoria |
| Office2: | Member of the House of Lords Lord Temporal |
| Term Start2: | 1860 |
| Term End2: | 1898 |
| Monarch2: | Victoria |
| Predecessor2: | The 1st Lord Cawdor |
| Successor2: | The 3rd Lord Cawdor |
| Office3: | Member of Parliament for Pembrokeshire |
| Term Start3: | 1841 |
| Term End3: | 1860 |
| Predecessor3: | Sir John Owen, 1st Baronet |
| Successor3: | George Lort Phillips |
| Monarch3: | Victoria |
| Nationality: | British |
| Spouse: | Sarah Mary Compton Cavendish |
| Children: | 7 (including Frederick Campbell, 3rd Earl Cawdor |
| Father: | John Campbell, 1st Earl Cawdor |
| Mother: | Lady Elizabeth Thynne |
John Frederick Vaughan Campbell, 2nd Earl Cawdor (11 June 1817 – 29 March 1898),[1] was a British politician.
Campbell was the son of John Campbell, 1st Earl Cawdor, and Lady Elizabeth Thynne, daughter of 2nd Marquess of Bath. He was known as Viscount Emlyn until the death of his father in 1860.
As Viscount Emlyn, he served as Lord-in-waiting to Princess Mary, Duchess of Gloucester, at the 1838 coronation of Queen Victoria.[2]
He married Sarah Mary Compton Cavendish, daughter of General Hon. Henry Frederick Compton-Cavendish and Sarah Fawkener, on 28 June 1842. They had seven children:
Cawdor, as Lord Emlyn, served as MP for Pembrokeshire from 1841 until 1860.
In later life he participated in local politics and was elected unopposed for Castlemartin at the first elections to Pembrokeshire County Council in 1889.[3]