Anna Sophie Dormer, Countess of Carnarvon (c.1610-3 June 1643) (née Lady Anna Sophia Herbert) was an English noblewoman who married Robert Dormer, 1st Earl of Carnarvon (1610 – 20 September 1643) and thereby became Countess of Carnarvon. 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. Anne Sophia died on 3 June 1643 of smallpox. Her husband did not long outlive her; Carnarvon was killed at the first Battle of Newbury on 20 September 1643.