Marius Müller-Westernhagen (born 6 December 1948 in Düsseldorf, North Rhine-Westphalia) is a German actor and musician.
Possibly best known for the maudlin hit "Johnny Walker", Marius Müller-Westernhagen has been a feature in German rock music since the mid-1970s. Marius is known for his energetic public concerts, and his fans know his anthem-like songs by heart. Though written a few years earlier, his song "Freiheit" ("Freedom") is widely considered as an anthem of the German Reunification.