HMS LST-409 was a Landing Ship, Tank Mk.2 of the Royal Navy during World War II.

Built by the US as a LST-1-class tank landing ship and transferred from the US Navy.

The ship was never named, but referred to by her hull designation.

LST-409 was laid down on 9 September 1942, under Maritime Commission (MARCOM) contract, MC hull 929, by the Bethlehem-Fairfield Shipyard, Baltimore, Maryland; launched 15 November 1942; then transferred to the United Kingdom and commissioned on 6 January 1943.

The tank landing ship was decommissioned and returned to United States Navy custody on 2 July 1946, and struck from the Navy list on 29 October, that same year.