French Revolutionary War Admiral Robert Montagu (1763 – 27 November 1830) was a Royal Navy officer who became Commander-in-Chief of the Jamaica Station.

Born the son of John Montagu, 4th Earl of Sandwich and Martha Ray,[1] Robert Montagu joined the Royal Navy some time prior to 1778, at which point he was serving as a lieutenant in the 74-gun ship of the line HMS Superb, the flagship of Vice-Admiral Sir Edward Hughes on the East Indies Station.

Towards the start of 1781 the captain of the 24-gun frigate HMS Seahorse, also on the station, died.

[2] He saw action at the Battle of Sadras in February 1782 during the Anglo-French War and again at the Battle of Providien in April 1782 during the American Revolutionary War.

He transferred to the command of the third-rate HMS Exeter in May 1782 in which he saw action at the Battle of Negapatam in July 1782, the Battle of Trincomalee in September 1782 and the Siege of Cuddalore in June 1783.