Michael Henry Hicks Beach, 3rd Earl St Aldwyn (born 7 February 1950) is a British peer, baronet, and businessman. He was a member of the House of Lords from 1992 to 1999.
The eldest of the three sons of Michael Hicks Beach, 2nd Earl St Aldwyn, and his wife Diana Mary Christian Mills, he was educated at Eton College and Christ Church, Oxford. He succeeded his father as Earl St Aldwyn and Viscount Quenington in 1992 and is also 11th Baronet, of Beverstone Castle, in the baronetage of England, a title created for his ancestor Sir William Hicks in 1619. Since 1994 he has been managing director of International Fund Marketing (UK) Ltd.