Admiral Sir Claude Henry Mason Buckle KCB (13 December 1803 – 10 March 1894) was an English naval officer.

[1] In January 1849, he was appointed to the frigate HMS Centaur as flag-captain to Commodore Arthur Fanshawe, going out as commander-in-chief on the west coast of Africa,[2] where, in December 1849, being detached in command of the boats of the squadron, together with the steamer HMS Teazer and the French steamer Rubis, he 'administered condign punishment' to a horde of pirates who had established themselves in the river Geba and had made prizes of some small trading vessels.

Towards the end of 1850, Buckle was compelled by failing health to return to England; and in December 1852 he was appointed to the frigate HMS Valorous,[2] attached during 1853 to the Channel squadron, and in 1854 to the fleet up the Baltic under Sir Charles Napier, and more particularly to the flying squadron under Rear-admiral (Sir) James Hanway Plumridge in the operations in the Gulf of Bothnia.

In the end of 1854, the Valorous was sent out to the Black Sea, where she carried the flag of (Sir) Houston Stewart at the reduction of Kinburn.

He married in 1847 Harriet Margaret, eldest daughter of Thomas Deane Shute of Bramshaw, Hampshire, and they had one son.