Yon Tumarkin (Hebrew: יון תומרקין; born 22 July 1989) is an Israeli male actor and singer, best known for playing Leo in the TV series Split.

[7] By the age of eight, Tumarkin was discovered by casting director Yael Aviv when sitting in a cafe with his father.

[13] In the same, year he co-starred with Amit Farkash in the TV series Split playing Leo Zachs, a 600-year-old Vampire who looks like a teenager.

[18] In 2015, Tumarkin starred along Yael Grobglas and Danielle Jadelyn in JeruZalem, an English-speaking Israeli horror film.

[19] In 2016, Tumarkin appeared in the Israeli child series Susey Pere (Wild Horses) as Libby Yahav.

[20] In the same year it was announced that Tumarkin was cast in the TV series "המלאך השומר שלי" (My Guardian Angel).