Alexandra Mirai (born 23 August 1974), known professionally as Lexi Alexander, is a German film and television director, martial artist, and actress. She is a former World Karate Association world champion in karate-point fighting, and is best known for directing the action films Green Street Hooligans and Punisher: War Zone. Her debut short film Johnny Flynton was nominated for the Academy Award for Best Live Action Short Film.

Alexander is a vocal advocate for equality in Hollywood and speaks out against gender discrimination and sexism, and promotes diversity, including a more positive and visible representation of Arabs.

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