Macrokentriodon is an extinct genus of giant dolphin once assigned to the paraphyletic/polyphyletic family Kentriodontidae.

Remains have been found in the late Miocene (Serravallian) Choptank Formation of United States.

[1] Macrokentriodon is similar to Hadrodelphis in its larger size and its large tooth diameter.

Despite being traditionally assigned to Kentriodontidae, recent cladistic analyses have recovered it along with Hadrodelphis in a clade with Kampholophos as sister to crown Delphinida and more derived than Kentriodon and Rudicetus.

This prehistoric cetacean-related article is a stub.