Celtic has been the name of a number of ships:

• {{MV|Celtic|1903}}, built as a sailing barge in 1903 and converted to a motorship in 1941
• {{RMS|Celtic|1901}}, a White Star Line liner
• {{SS|Celtic|1872}}, a White Star Line liner
• {{USS|Celtic|AF-2}}, a U.S. Navy supply ship

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