Charles Henry Leicester Stanhope, 12th Earl of Harrington (born 20 July 1945), styled as Viscount Petersham from birth until his father's death in 2009, is the son of William Stanhope, 11th Earl of Harrington, and his wife, Eileen Grey.

Charles Henry Leicester Stanhope was born 20 July 1945 to William Stanhope, 11th Earl of Harrington (1922–2009), and Eileen Grey, daughter of Sir John Foley Grey, 8th Baronet.

He had two older sisters, the elder of whom was Lady Jane Stanhope (1942–1974), who married Anthony Cameron and was killed in a motor accident in 1974.

He was ranked 325th in the Sunday Times Rich List 2008 with an estimated wealth of £250 million.

They had two children and four grandchildren: He married, secondly, the photographer Anita Fuglesang, formerly the wife of Michael Howard, 21st Earl of Suffolk.