William Legge, 4th Earl of Dartmouth FRS, SA, styled The Honourable William Legge until 1801 and Viscount Lewisham between 1801 and 1810, was a British peer.

George Legge, 3rd Earl of Dartmouth KG, PC, FRS, styled Viscount Lewisham until 1801, was a British politician who sat in the House of Commons from 1778 to 1784.