HMS Rupert was a 64-gun third rate ship of the line of the Royal Navy, ordered on 26 October 1664 as part of the ship construction programme of that year. She was launched on 26 January 1666 at Harwich Dockyard. In his diary entry of 19 May 1666, Samuel Pepys of the Navy Board describes a conversation concerning the construction of the Rupert that he had with her designer, Anthony Deane: Rupert was broken up in 1769.