HMS Porlock Bay (K650/F650) was a Bay-class anti-aircraft frigate of the British Royal Navy, named for Porlock Bay on the northern coast of Somerset. Commissioned in 1946, she served on the American and West Indies Station and as a Fisheries Protection Vessel before being put into reserve in 1949. She was sold to Finland in 1962 and served as the training ship Matti Kurki until 1974.