Charles Seton, 2nd Earl of Dunfermline PC (November 1615 – 11 May 1672), styled Lord Fyvie until the death of his father in 1622, was a Scottish peer.
Seton the son of Alexander Seton, 1st Earl of Dunfermline and Margaret, daughter of James Hay, 7th Lord Hay of Yester and Lady Margaret Kerr.
He held the post of Keeper of the Privy Seal of Scotland from 1661 to his death in 1672.
Lord Dunfermline was married to Mary Douglas, daughter of William Douglas, 7th Earl of Morton and Anne Keith, daughter of George Keith, 5th Earl Marischal.
She became a friend of Anne Halkett in 1650 and introduced her to King Charles at Dunfermline Palace, and travelled with her from Perth to Glamis, Brechin and Fyvie Castle.