1991 was a year in the 20th century.
Behind the scenes
- Back to the Future: The Animated Series debuted on CBS on September 7, 1991.
- Back to the Future: The Ride opened at Universal Studios Florida.
- Back to the Future Part III (video game) was released on the Sega Genesis.
- The Institute of Future Technology was opened by Emmett Brown.
- During this time, the Brown family lived in a farmhouse outside Hill Valley and Marty McFly and Jennifer Parker attended Hill Valley College.