USS Comet or USNS Comet has been the name of more than one United States Navy ship, and may refer to:

• USS Comet (SP-772), a patrol vessel in commission from February to August 1918
• USS Comet (AP-166), a transport in commission from 1944 to 1946
• USNS Comet (T-AK-269), a cargo ship, later vehicle landing ship (T-LSV-7), later vehicle cargo ship/roll-on/roll-off ship, (T-AKR-7) in non-commissioned service in the Military Sea Transportation Service and Military Sealift Command from 1958 until being placed in reserve in 1985, and still in reserve

List of ships with the same or similar names

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.