2003 was a year in the 21st century.
- Thursday, April 12: Emmett Brown arrived with Bob Muglia on this date to explain why Microsoft's past visions of the future hadn't been that great.
- Date unknown: The McFly family took a vacation this year and documented it on a videobook.
Behind the scenes
- Back to the Future: The Animated Series is rerun on FOX from March 2003 to September 2003, and is rerun on Nickelodeon from March 2003 to May 2006.
- Tuesday, June 12: Back to the Future: The Ride opens at Universal Studios Hollywood.
- The 1993 re-release film Back to the Future celebrated its 10th anniversary on July 3, 2003.