Jack Robert Culcay-Keth (born 26 September 1985) is an Ecuadorian-born German retired professional boxer.

But while all the German top fighters exited early he and middleweight Konstantin Buga were the only ones to reach the quarterfinal and qualify for the 2008 Summer Olympics.

At the World Championships, Culcay beat Jetmir Kuci and Zoran Mitrovic then he lost to eventual American winner Demetrius Andrade.

[2] Culcay went on to win a gold medal at the 2009 World Championships, beating Andrey Zamkovoy in the final match.

Culcay claimed the European light-middleweight title in August 2014, beating Isaac Real on points.

After two successful defenses, Culcay reached an agreement to fight former world champion Demetrius Andrade.