Sir Ralph Gore, 4th Baronet (c. 1675 – 23 February 1733) was a Speaker of the Irish House of Commons. He is now chiefly remembered for building Belle Isle Castle. The Gore Baronetcy, of Magherabegg in the County of Donegal, was created in the Baronetage of Ireland on 2 February 1622 for Paul Gore (shown also as 1st baronet of Manor Gore, the Anglicized version). Ralph was the eldest son of Sir William Gore, 3rd Baronet and his wife Hannah Hamilton, daughter and co-heiress of James Hamilton of Manorhamilton and niece of Gustavus Hamilton, 1st Viscount Boyne. Ralph inherited the estate of Manorhamilton from his mother.