Admiral of the Fleet Sir Henry John Codrington KCB (17 October 1808 – 4 August 1877) was a Royal Navy officer.

As a captain, Codrington provided refuge on board ship for Leopold II, Grand Duke of Tuscany and his family who were fleeing from revolutionary forces and then commanded HMS Royal George in the Baltic Sea during the Crimean War.

[4] Promoted to captain on 20 January 1836, he became commanding officer of the sixth-rate HMS Talbot in March 1838 and in that capacity undertook a survey of enemy positions prior to the bombardment of Acre in November 1840 during the Egyptian–Ottoman War.

[4] He became commanding officer of the fifth-rate HMS Thetis in the Mediterranean Fleet in October 1846 and provided refuge on board ship for Leopold II, Grand Duke of Tuscany and his family who were fleeing from revolutionary forces in 1848.

[4] Codrington became commanding officer of the first-rate HMS Royal George in the Baltic Sea in October 1853 and took part in naval operations during the Crimean War.

[4] Admiral Sir Charles Napier threatened to court-martial him for failing to achieve the required standards but the Admiralty refused to support this course of action.

[4] Promoted to commodore, he was given command of a squadron of gunboats with his broad pennant in the second-rate HMS Algiers in February 1856.