USS Lilian or USS Lillian may refer to the following United States Navy ships:
- USS Lilian (1863), a steamer in commission from 1864 to 1865
- USS Lillian II (SP-38), a patrol boat in commission in 1917
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.