There is no definitive answer to this question as it depends on the specific definition of ‘world champion’ used. However, we can broadly divide the world into two categories: countries with a recognised national Bingo association and those without.
The national associations typically have a world champion, who is typically the most successful player within their country. The world champion for non-national associations is typically the player with the highest score over a set period of time.
As of October 2016, the world champion for national associations is Dionysis Zindros from Greece, who has won a total of 27 tournaments. Zindros is followed by American Barry Hutter, who has won 24 tournaments.
The world champion for non-national associations is American Ken Jennings, who holds the record for most consecutive wins, with 74 between 2002 and 2007.