Jürgen Prochnow IPA: jʏrgɛn prɔxnɔv (born June 10, 1941) is a German actor. His most well-known roles internationally have been as submarine Captain Heinrich Lehmann-Willenbrock in Das Boot (1981), Duke Leto Atreides in Dune and the villain Maxwell Dent in Beverly Hills Cop II.

He studied acting at the Folkwang School in Essen.
Thanks to his on-screen intensity and his fluency in English, he has become one of the most successful German actors in Hollywood.

He portrayed Arnold Schwarzenegger in a film about the actor's political career in California, entitled See Arnold Run.

He also stars in the Broken Lizard film Beerfest.