Celtic has been the name of a number of ships:
- SS Celtic (1872), a White Star Line liner
- RMS Celtic (1901), a White Star Line liner
- MV Celtic (1903), built as a sailing barge in 1903 and converted to a motorship in 1941
- USS Celtic (AF-2), a U.S. Navy supply 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.