Thomas Warren (Royal Navy officer)

Commodore Thomas Warren (died 12 November 1699) was a Royal Navy officer who became Commander-in-Chief, Portsmouth.

Naval career Promoted to captain on 28 May 1689, Warren was given command of the fifth-rate HMS Hopewell in 1690, the fifth-rate HMS Sweepstakes in 1691 and the fourth-rate HMS Crown in 1692. In the Crown he took part in the action at Barfleur in May 1692 and the action at La Hogue in June 1692.

In December 1698, Warren was tasked with obtaining the surrender of pirates under the 1698 Act of Grace, commanding a squadron consisting of , , and . By the time the squadron arrived at Madagascar's Île Sainte-Marie on 29 January 1699, the terms of the Act had expired; therefore, Warren promised to have the dates extended. However, in the case of some pirates, it was ruled that Warren did not have the authority to make such an extension, thus invalidating the pardons. Notably, Warren's commission from the King specifically excluded two pirates from the general pardon: "and also excepting Henry Every alias Bridgman, and William Kidd."