Semyon Dukach (born 25 October 1968) is an American entrepreneur and former professional blackjack player.

Dukach was the main character in Busting Vegas and the only member of the MIT blackjack team to be referred to by his real name in either book.

[8] At a young age Semyon developed an interest in video games and specifically Pac-Man.

Semyon became proficient at the game by reading Ken Uston's Mastering PAC-MAN.

Starting out with Strategic Investments (SI) in 1992, Dukach was a major player on the team.