Waking Life is a 2001 American adult animated drama film written and directed by Richard Linklater. The film explores a wide range of philosophical issues, including the nature of reality, dreams and lucid dreams, consciousness, the meaning of life, free will, and existentialism. The series of insightful philosophical discussions at the core of the film are progressed by a young man who wanders through a succession of dreamlike realities wherein he encounters a series of interesting characters.

The entire film was digitally rotoscoped. It contains several parallels to Linklater's 1991 film Slacker. Ethan Hawke and Julie Delpy reprise their characters from the 1995 Before Sunrise in one scene. Waking Life premiered at the 2001 Sundance Film Festival, and was released on October 19, 2001, where it received critical acclaim; however, it underperformed at the box office.