HMS Meteorite was an experimental U-boat developed in Germany, scuttled at the end of World War II, subsequently raised and commissioned into the Royal Navy.

The three completed German Type XVIIB submarines were scuttled by their crews at the end of the Second World War, U-1405 at Flensburg and U-1406 and U-1407 at Cuxhaven, all in the British Zone of Occupation.

[4] U-1407 was salvaged in June 1945, and transported to Barrow-in-Furness, where she was refitted by Vickers with a new and complete set of machinery also captured in Germany, under the supervision of Professor Hellmuth Walter.

During 1946 Meteorite carried out a series of trials under the guidance of Walter and his original team from Germaniawerft, Kiel.

The trials raised considerable interest in the possibility of HTP as an alternative to nuclear power as air-independent propulsion and the Admiralty placed an order for two larger experimental Walter boats based on the German Type XXVI, the Explorer-class submarines HMS Explorer and HMS Excalibur, to be followed by an operational class of 12 boats.