A
- Admiral Graf Spee: 12,000 ton Deutschland class heavy cruiser, launched 1933
- Admiral Hipper: 14,000 ton Admiral Hipper class heavy cruiser, launched 1937
- Admiral Scheer: 12,000 ton Deutschland class heavy cruiser, launched 1934
- Adolf Lüderitz: Fleet tender, launched 20 February 1939, commissioned 11 June 1940
- SMS Ägir (2): 3,700 ton Odin-class coastal defense ship, launched 1895
- Albatross gunboat, launched 1871
- Albatros: Type 1923 torpedo boat, launched 15 July 1926, commissioned 5 May 1927, beached 9 April 1940
- Albatros: Seeadler (Type 141) fast attack craft, commissioned 1959 to 1975
- Albatros: Albatross class (Type 143) fast attack craft, decommissioned
- Albatross: 2,000 ton Nautilus class mine-laying cruiser, launched 1907
- Albert Leo Schlageter: Sail training ship, launched 1937, became Portuguese training ship Sagres III in 1961
- Alk: Jaguar (Type 140) fast attack craft, commissioned 1960—1974
- Alk: Tiger class (Type 148) fast attack craft, decommissioned
- Alster: Oste class (Type 423) fleet service, surveillance, and ELINT ship
- Amazone: 3-masted sail corvette of the Preußische Marine
- Amazone: 2,700 ton Gazelle class light cruiser
- Ammersee: Walchensee class (Type 703) small coastal tanker
- Anton Schmitt: 2,400 ton Type 1936 destroyer
- Arcona: 2,700 ton Gazelle class light cruiser, launched 10 August 1900, commissioned 18 May 1901, recommissioned 27 May 1940 as a floating flak battery, scrapped 1948
- Ariadne: 2,700 ton Gazelle class light cruiser
- Arminius: Unique ironclad warship
- Atlantis HSK 2: 17,000 ton unique auxiliary merchant cruiser
- Auerbach: Ensdorf class (Type 352) minesweeper, become Oberfalz
- Augsburg: 4,400 ton Kolberg class light cruiser, launched 1909
- Augsburg: Köln class (Type 120) frigate, commissioned 1962 to 1988
- Augsburg: Bremen class (Type 122) frigate
Read more about this topic: List Of Naval Ships Of Germany