The Common Dolphin is the name given to two, or occasionally one species of dolphin, making up the genus Delphinus.

Prior to the mid-1990s, most taxonomists only recognised one species in this genus, the Common Dolphin Delphinus delphis.
Modern cetologists usually recognise two species - the Short-beaked Common Dolphin, which retains the systematic name Delphinus delphis, and the Long-beaked Common Dolphin D. capensis.

Despite its name the Common Dolphin is not the dolphin of popular imagination - that distinction belongs to the Bottlenose Dolphin, largely due to the television series Flipper.