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

Green Street is a 2005 crime drama film about football hooliganism in the United Kingdom. The film was directed by Lexi Alexander and stars Elijah Wood and Charlie Hunnam.