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Kostja Ullmann averages 6.08 across 14 rated films as an actor, ahead of Detlev Buck at 6.06.
Dot size shows IMDb votes. Films with fewer than 1,000 votes sit on the baseline.
| Bibi & Tina: Mädchen gegen Jungs | 2016 | 5.4 | Producer, as Dr. Eichhorn, Director | Actor |
| Wuff | 2018 | · | Producer, Director | as Daniel |
| Christmas Crossfire | 2020 | 4.8 | Writer, as Sigi Köhler, Bürgermeister, Director, Producer | as Sam |