Peter-Erich Cremer (25 March 1911 – 5 July 1992) was a German U-boat commander during the Second World War.

In November 1944, Cremer, now Lieutenant Commander, aimed to convey the new submarine U-2519 Class XXI.

As the War drew to a close, he was attached to the personal security unit of Karl Dönitz.

In this role he was involved in the incident in which Kapitän zur See Wolfgang Lüth was shot to death by a German sentry.

Peter-Erich Cremer appeared in Episode 10: 'Wolf Pack: U-Boats in the Atlantic' of the British television documentary The World at War in the early 1970s.