Maggie Simpson in "The Longest Daycare" or simply The Longest Daycare, is a 2012 American animated 3D comedy short film based on the animated television series The Simpsons. In the film, Maggie Simpson is enrolled at a new daycare facility where she squares off with the foul-tempered Baby Gerald when she befriends a caterpillar. The short originated with Simpsons producer James L. Brooks, who enlisted long-time veteran of the series David Silverman to direct the film. The picture was written by producers Brooks, Al Jean, David Mirkin, writers Michael Price and Joel H. Cohen, as well as the show's creator Matt Groening, who also produced the short.

The film premiered on July 13, 2012, where it was attached to screenings of the 20th Century Fox release Ice Age: Continental Drift. The film is the second Simpsons theatrical release. The short was re-released on February 15, 2013, and played before the film Life of Pi in selected theaters in United States. Reception has been positive, praising the storytelling and animation. The film was nominated for an Academy Award for Best Animated Short Film in 2013.