Charles Berkeley, 2nd Earl of Berkeley, KB, PC, FRS (8 April 1649 – 24 September 1710) was a British nobleman and diplomat, known as Sir Charles Berkeley from 1661 to 1679 and styled Viscount Dursley from 1679 to 1698.
The son of George Berkeley, 1st Earl of Berkeley, he was educated at Christ Church, Oxford and Trinity College, Cambridge, was created a Knight of the Bath for the coronation of Charles II in 1661, and received his Master of Arts from Oxford on 28 September 1663. On 21 November 1667, he was elected a Fellow of the Royal Society.
Berkeley adopted the styling Viscount Dursley in September 1679, when his father was raised to the earldom. He had just been elected as MP for Gloucester, for which he sat in the last two Parliaments of Charles II, in 1679 and 1681. He did not stand again, in part due to conflict with the Tory corporation of the city. Dursley followed his father in opposing James II in the Glorious Revolution, and enjoyed a number of appointments thereafter. Called up to the House of Lords as Baron Berkeley in July 1689, he was then sent as Envoy Extraordinary to Spain in May 1689, and as Ambassador to the United Provinces from August 1689 to 1695. He also received the post of Custos Rotulorum of Gloucestershire, previously held by his father, in July 1689. On 3 May 1694, he was made a Privy Councillor, and on 25 May, was appointed Lord Lieutenant of Gloucestershire. In the following year, Dursley was appointed High Steward of the City of Gloucester, and Constable of St Briavel's Castle on 18 June 1697.