HMS Chaser (D32/R306/A727) was an American-built Attacker-class escort carrier that served with the Royal Navy during the Second World War. Acquired by the United States Navy for conversion to a Bogue-class escort carrier; she was transferred to the Royal Navy and commissioned as Chaser on 9 April 1943, under the Lend-Lease agreement. She spent most of her career escorting convoys in Arctic, she transferred to the British Pacific Fleet in March 1945.