USS Mizar may refer to the following ships of the United States Navy:
- USS Mizar (AF-12), was a cargo ship during World War II
- USNS Mizar (T-AGOR-11), was an oceanographic research ship and submarine rescue ship
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.