Michael Arndt is an American screenwriter who has written for the films Little Miss Sunshine (2006), Toy Story 3 (2010), and Star Wars: The Force Awakens (2015).

Arndt won the Academy Award for Best Original Screenplay for Little Miss Sunshine and was nominated for Best Adapted Screenplay for Toy Story 3. This made Arndt the first screenwriter nominated for the Academy Award for Best Original Screenplay and Best Adapted Screenplay for his first two screenplays.