Spirit Untamed is a 2021 animated adventure film produced by DreamWorks Animation, and Dentsu, and distributed by Universal Pictures. The film was directed by Elaine Bogan and co-directed by Ennio Torresan Jr. (in their feature directorial debuts), from a screenplay written by Aury Wallington and Kristin Hahn, making this the second theatrical film release of the Spirit franchise and is both a spin-off and a stand-alone sequel of the traditionally animated Academy Award nominated Spirit: Stallion of the Cimarron (2002) and loosely based on the characters from its Netflix animated spin-off television series Spirit Riding Free, developed by Wallington.

Featuring the voices of Isabela Merced, Jake Gyllenhaal, Marsai Martin, Mckenna Grace, Julianne Moore, Walton Goggins, and Andre Braugher, the film follows a young girl named Fortuna "Lucky" Prescott who moves to the small rural community of Miradero, where she meets the titular wild kiger mustang. As the son of Spirit and Rain from Spirit: Stallion of the Cimarron, she names the horse "Spirit" after his father, and Lucky immediately begins to bond with him. The film was announced to be in development in October 2019, and production was done remotely during the COVID-19 pandemic. The film was dedicated to the memory of Kelly Asbury, the co-director of the original Spirit film, who died on June 26, 2020.

Spirit Untamed was theatrically released in the United States on June 4, 2021. The film received mixed reviews from critics who deemed the film inferior to the original and unnecessary, though its animation was praised. The movie was also a box-office bomb after grossing $42 million worldwide against a budget of $30 million, making it DreamWorks Animation's lowest-grossing film to date.