Two ships in the United States Navy have been named USS Hammann for Ensign Charles Hammann.
- USS Hammann (DD-412), was a destroyer, commissioned in 1939 and sunk in enemy action in 1942
- USS Hammann (DE-131), was a destroyer escort, commissioned in 1943 and decommissioned in 1946
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.