USS Sylvia has been the name of more than one United States Navy ship, and may refer to:
- USS Sylvia (1882), a patrol yacht in commission from June to December 1898 and from 1917 to 1919
- USS Sylvia (SP-471), later USS SP-471, a patrol vessel in commission from 1917 to 1919
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.