Richard Wingfield, 3rd Viscount Powerscourt (24 December 1730 – 8 August 1788) was an Anglo-Irish politician and peer.
| Honorific Prefix: | The Right Honourable |
| Viscount Powerscourt | |
| Office: | Member of Parliament for Wicklow |
| Term Start: | 1761 |
| Term End: | 1764 |
| Birth Name: | Richard Wingfield |
| Birth Date: | 24 December 1730 |
| Residence: | Powerscourt House, Dublin |
| Parents: | Richard Wingfield, 1st Viscount Powerscourt Dorothy Beresford Rowley |
| Children: | 2 |
| Spouse: | |
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 County Wicklow 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.[1]
He lived in Powerscourt House, Dublin.
He married Lady Amelia Stratford, daughter of John Stratford, 1st Earl of Aldborough and Martha O'Neale, on 7 September 1760. Powerscourt was succeeded by his eldest son, Richard.[2]