1. Walt Disney studios had planned on making a film adaptation of the snow queen as far back as the 1940's but the idea didn't catch on until 2011.
2. Frozen was Inspired by Hans Christian Andersen's fairy tale The Snow Queen.
3. There is a cameo of Rapunzel and Flynn Rider from Tangled when the gates open.
4. Jennifer Lee is the first female to direct a full-length Disney animated feature film.
5. At the end of the credits Disney says:
"The views and opinions by Kristoff in the film that all men eat their boogers are solely his own and do not necessarily reflect the views or opinions of The Walt Disney Company or the filmmakers. Neither The Walt Disney Company nor the filmmakers make any representation of the accuracy of any such views and opinions."