The name USS K-1 may refer to the following ships of the United States Navy:
- USS K-1 (SS-32), the lead vessel of the K-class submarines, originally named Haddock
- USS K-1 (SSK-1), the lead vessel of the Barracuda-class submarines, later renamed Barracuda
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.