HMS Sir Sydney Smith (1812)

HMS Sir Sydney Smith was a 10-gun schooner, later altered to brig, of the Royal Navy in 1814. She saw service on the on Lake Ontario during the War of 1812.

She was previously named Simcoe, and was also referred to as Governor Simcoe. She was named after John Graves Simcoe, the first lieutenant governor of Upper Canada. She was briefly involved in a chase near Burlington, Ontario by USS Julia. She was not however a commissioned warship of the Royal Navy and so was not entitled to the prefix 'HMS'. She was however purchased by the navy in 1812, and was renamed HMS Magnet on 11 January 1814. She was burnt on 5 August 1814 to prevent her being captured by the Americans.

She was named after the British naval officer Sidney Smith.