How the Grinch Stole Christmas!

How the Grinch Stole Christmas! would be a musical produced by Disney Theatrical Productions and based on the 1957 children's book of the same name by Ted Geisel, also known as Dr. Seuss. The musical would feature three songs from the 1966 film of the same name, with music by Albert Hague and lyrics by Geisel, as well as several new songs composed by Alan Menken, with lyrics by Lyhn Arens, the latter whom would also write the musical's book.

Disney Theatrical productions would acquire the rights to adapt How the Grinch Stole Christmas! as a musical in 2021, with development on a musical starting late in 2021, with Ahrens set to write the book, and Menken and Ahrens set to write songs for the musical. The musical would first premiere in the Madison Square Garden at New York City. The musical would later be moved to San Diego's Papermill Playhouse in 2025, and would ultimately move to Broadway in 2027. The book would expand the book's story in order to both feature the Grinch's past, as in other adaptations, and further show the book's anti-commercialism message.

Overall, the musical would become a critical success, with the Sqaure Garden and Papermill versions being praised for its production values and designs, while the Broadway version would be praised for its visual effects. Critics would praise the overall musical for its book, songs, and performances.