Robert Dormer, 1st Earl of Carnarvon (1610 – 20 September 1643) was an English peer. He was the son of Sir William Dormer, and thus a grandson of Robert Dormer, 1st Baron Dormer. His mother was Alice Molyneux, daughter of Sir Richard Molyneux, 1st Bt. and Frances Gerard. Dormer received the title Baron Dormer at the age of six and on 2 August 1628, at age 18, he was raised to Viscount Ascott and was created Earl of Carnarvon.