Lionel Baier is a Swiss filmmaker. He studied Art at University of Lausanne from 1995–98. In 2009, he co-founded the production company Bande à Part films, together with Ursula Meier, Jean-Stéphane Bron and Frédéric Mermoud.

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Lionel Baier is a Swiss film director, writer, and producer who co-founded the production company Bande à Part films.
He is known for directing European feature films and documentaries such as Continental Drift (South), Vanity, and Longwave.
He co-founded the production company Bande à Part films alongside Ursula Meier, Jean-Stéphane Bron, and Frédéric Mermoud.