Robert-Richard Zapp (3 April 1904 – 17 July 1964) was a German naval officer in World War II.

Before joining the U-boat service in 1939, he served aboard a minesweeper and later on took command of 251 Marineflak (Naval anti-aircraft artillery).

After initial training, he served on board U-46 for a short while under Oberleutnant zur See Engelbert Endrass, with whom he participated in the battle against Convoy HX 79 in October 1940.

They included the 7,988 GRT Canadian passenger liner RMS Lady Hawkins on 19 January, whose final death toll was 251.

[1] In June 1942 he was posted ashore to become commander of 3rd U-boat Flotilla, based at La Rochelle, France.