Philip Henry Stanhope, 5th Earl Stanhope,, styled Viscount Mahon between 1816 and 1855, was an English antiquarian and Tory politician. He held political office under Sir Robert Peel in the 1830s and 1840s but is best remembered for his contributions to cultural causes and for his historical writings.

Philip Henry Stanhope, 4th Earl Stanhope FRS, was an English aristocrat, chiefly remembered for his role in the Kaspar Hauser case during the 1830s.