Phil Joanou is an American film director. He is also well known for his work with Irish rock band U2, having directed their rockumentary/live tape Rattle and Hum, one of three videos filmed for "One", and the video for "All Because of You". Married to Ford Model Breann Nelson.

The film Entropy (1999) was Joanou's own autobiography, wherein the director played by Stephen Dorff passes through many of the incidents of Joanou's own life.