Jacob Makohin[a] (born September 27, 1880), who also styled himself as Prince Leon Bogun Mazeppa von Razumovsky,[b][1] was a Ukrainian American military and public figure, philanthropist, pretender nobleman and a pretender to the Hetmanship of Ukraine.

He claimed to be the sole surviving descendant of Count Kirill Grigorievich Razumovsky, who was the last hetman of Zaporozhian Host, although there is no evidence for this.

Under the name Makohin he enlisted in the United States Marine Corps and served during World War I as a pilot.

During World War II that they were forced to flee back to the United States where they settled in Newton, Massachusetts.

Jacob Makohin died on January 13, 1956, and was buried in Arlington National Cemetery.