Marvel's Moon Girl and Devil Dinosaur (or simply Moon Girl and Devil Dinosaur) is an American animated television series developed by Steve Loter, Jeffrey M. Howard, and Kate Kondell for Disney Channel. Based on the characters of the same names by Marvel Comics, the series follows Lunella Lafayette and her dinosaur companion "Devil Dinosaur".

The series features the voices of Diamond White, Fred Tatasciore, Alfre Woodard, Sasheer Zamata, Jermaine Fowler, Gary Anthony Williams, Libe Barer, and Laurence Fishburne. Development began after Marvel Studios president Louis D'Esposito showed Fishburne the comic book Moon Girl and Devil Dinosaur. His interest piqued, Fishburne sought to make an animated series based on the duo. Production proceeded for two years before Steve Loter was hired as an executive producer. After a successful pitch to Disney Television Animation executives, the series was greenlit and publicly announced in February 2018. It is produced by Cinema Gypsy Productions, Disney Television Animation, and Marvel Animation, with animation by Flying Bark Productions.

In October 2022, ahead of the series premiere, the series was renewed for a second season. Marvel's Moon Girl and Devil Dinosaur premiered on Disney Channel on February 10, 2023, and was released on Disney+ five days later. The series received highly positive reviews for its writing, animation, soundtrack, representation, and characters. The series won five Children's and Family Emmy Awards. The second season premiered on February 2, 2024. On October 18, 2024, it was announced that the remaining episodes of season two would premiere in 2025.