HMS Norfolk (pennant D21) was a County-class destroyer of the Royal Navy. She was the fourth Group 2 and the last of the County-class built. The fifth ship named Norfolk, she was laid down on 15 March 1966 by Swan Hunter and launched by Lavinia, Duchess of Norfolk on 16 November 1967. She was commissioned on 7 March 1970. In 1982 she was sold to Chile and served in their navy as Capitán Prat until 2006 and subsequently sold for scrap.