The Master of Naval Ordnance was an English Navy appointment created in 1546 the office holder was one of the Chief Officers of the Admiralty and a member of the Council of the Marine and a member of the Office of Ordnance until the post was abolished in 1589.

He was responsible for the supply of naval ordnance for the navy.

[1][2] The office of Master of Naval Ordnance was a specific post within Office of Ordnance established in 1546 during the reign of Henry VIII of England.

He was initially assigned to the Council of the Marine acted as a liaison between both.

The post holder was responsible for the supply of naval ordnance for the navy.