Born 1967 in Prague. Graduated in scriptwriting and dramaturgy from the Film Faculty of the Academy of Performing Arts in Prague. In 1993, he made his debut as a director with a film about punks, "Padlock". In 1997 he premiered his most highly awarded film, the episodic film "Buttoners" (Tiger Award 1998 from Rotterdam Film Festival). The popular film "Loners" (2000) was based on Zelenka's script and became the No. 1 box office hit of the year. His other films (both script and direction) include "Year of the Devil" (2003) and "Tales of Common Insanity" (2005). His latest film "The Brothers Karamazov" (2008) won two Czech Lions for the best film and best direction. His debut as a playwright and, for the first time, a theatre director was with "Tales of Common Insanity" (2001, Alfréd Radok Award). Zelenka's play, "Teremin", was first shown in the Dejvické Theatre in 2005. In the field of television he was creative supervisor, one of the adapting authors and director of 20 episodes of the TV series, "In Treatment" (HBO, Czech Republic 2011).