Richard Wingfield, 3rd Viscount Powerscourt (24 December 1730 – 8 August 1788) was an Anglo-Irish politician and peer. Powerscourt was a younger son of Richard Wingfield, 1st Viscount Powerscourt and Dorothy Beresford Rowley. He was educated at Trinity College, Dublin and was admitted to the Middle Temple in 1746. He served in the Irish House of Commons as the Member of Parliament for Wicklow County from 1761 to 1764. That year he succeeded his brother, Edward Wingfield, 2nd Viscount Powerscourt, in his titles and assumed his seat in the Irish House of Lords.