McKeon and MacKeon are an Irish surnames originating both from the Gaelic Mac Eoghain ("Son of Eoghan") and Mac Eoin ("Son of John"), which are pronounced identically. Other variants in English include MacEoin and McKeown.
and may refer to
Alistair McKeon, fictional character in the HonorverseHoward McKeon, American politicianJack McKeon, American baseball managerJohn McKeon (1808-1883), New York lawyer and politician, U.S. RepresentativeJohn F. McKeon, American politicianLarry McKeon, American politicianLindsey McKeon, American actressMatt McKeon, American soccer playerMatthew McKeon, U.S. MarineMichael McKeon, American journalistMyles McKeon, Roman Catholic bishopNancy McKeon, American actressPhilip McKeon, American actor (and brother of Nancy McKeon)Richard McKeon, American philosopherStephen McKeon, film music composer