Delphin \d(e)-lphin, del-phin\ as a boy's name is of Greek origin, and the meaning of Delphin is "dolphin". French form of a name that refers to the Greek town of Delphi, home of a famous oracle. The Greeks believed that Delphi was the earth's womb; the dolphin's shape resembles that of a pregnant woman. Saint Delphin (fourth century) was a French bishop. The feminine version is Delphine.