Drew Struzan Art - Back To The Future Part III Movie Poster Vintage One Sheet | Back to the Future Part III is a science fiction Western comedy film and the third and final installment of the Back to the Future trilogy. Directed by Robert Zemeckis and starring Michael J. Fox, Christopher Lloyd, Mary Steenburgen, Thomas F. Wilson and Lea Thompson. Back to the Future Part III was filmed in California and Arizona, and was produced on a $40 million budget back-to-back with Back to the Future Part II. Part III was released in the United States on May 25, 1990, six months after the previous installment. Part III earned $244.5 million worldwide against a budget of $40 million, making it the sixth-highest-grossing film of 1990.