Ulf Kirsten (born 4 December 1965) is a German former professional footballer and manager, who played as a striker.
Nicknamed Der Schwatte (dialect for "Der Schwarze", The Black One), he is the first player in the history to reach a total 100 caps playing with two different national teams (first for East Germany, then Reunified Germany).
Kirsten's biggest success was the victory of the 1992–93 DFB-Pokal.
He served the Stasi as an informer under the codename "Knut Krüger".