John Frederick Vaughan Campbell, 2nd Earl Cawdor (11 June 1817 – 29 March 1898), 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. 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:

Political career

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.