Sir Courtenay Boyle, KCH (3 September 1770 – 21 May 1844) was an officer of the Royal Navy during the French Revolutionary Wars.

He was also a relative of Commodore Robert Boyle, who died in a hurricane off Jamaica while commanding a squadron dispatched to the West Indies.

Boyle went to sea aboard during the American War of Independence, he went out in HMS Gibraltar, and on returning home was sent to a naval academy at Greenwich.

This ship, after fitting at Plymouth, was attached to the squadron under Rear-Admiral John Gell that conveyed the East India fleet to a certain latitude and then proceeded to cruise off the coast of Spain.

[5] Boyle was sent to cruise off the Texel and Coruña for the protection of English packets, where he destroyed several row-boats.

[5] In June 1799 he was appointed to command the 24-gun HMS Cormorant, and after taking convoy to Lisbon and Gibraltar, he joined Lord Keith's squadron at Leghorn.

Boyle sailed to communicate the news that the French had put to sea to Lord Nelson, who was lying at anchor north of Sardinia.

[10] In the summer of 1805 Boyle exchanged into HMS Amfitrite, a Spanish prize frigate, and returned to England.

His last appointment afloat was in May 1806, when he was appointed to command HMS Royal William, the flagship of Admiral Sir George Montagu at Spithead; which ship he retained until June 1809, when he succeeded Captain George Henry Towry as a Commissioner of Transports.

In 1832 he was nominated a Knight-Commander of the Hanoverian Guelphic Order, and made a Knight Bachelor on 3 December that year.

[15] The ancient and prominent Poyntz family first appeared in England in the late 12th century as feudal barons of Curry Mallet in Somerset, and were later seated at Iron Acton in Gloucestershire.