Mark Anthony of Carrigcastle (1786 – 1 June 1867) was an officer in the 19th century Royal Navy. As a 15 year old, he boarded the Milford packet in Checkpoint in 1801 and, a week later on 14 July, he had joined the Royal Navy as a midshipman on board the sloop HMS Hunter (18 guns) which was then in berth at Portsmouth. He was serving on her when she had 15 men killed in an unsuccessful action off the west coast of Cuba towards the close of 1803. He was then posted to HMS Clorinde.