William Carnegie, 7th Earl of Northesk, Scottish-English admiral (born 1756)

Admiral William Carnegie, 7th Earl of Northesk, was a Royal Navy officer who served in the American Revolutionary War and French Revolutionary and Napoleonic Wars. While in command of HMS Monmouth he was caught in the Nore Mutiny of 1797 and was the officer selected to relay the demands of the mutineers to George III. He most notably served as third-in-command of the Mediterranean Fleet at the Battle of Trafalgar in HMS Britannia. He later became Rear-Admiral of the United Kingdom and Commander-in-Chief, Plymouth.