Rut Castillo Galindo (born 16 September 1990)[1] is a Mexican individual rhythmic gymnast.

[5] Then at the 2007 Pan American Games, she won the bronze medal in the all-around behind Lisa Wang and Valdez.

[14][15] However, she tested positive for Sibutramine, and in March 2011, she received a six-month suspension and was stripped of her medals.

[16][17][18] Castillo returned to competition at the 2011 World Championships where she finished 71st in the all-around and 17th with the Mexican team.

[24] Castillo was selected to represent Mexico at the 2015 Pan American Games where she finished seventh in the all-around and qualified for all four event finals.

[30] Castillo began the 2018 season at Central American and Caribbean Games where she won her second all-around title.

[34][35] She represented Mexico at the 2019 Pan American Games, finishing tenth in the all-around and seventh in the ribbon final.

[37][38] At the 2021 Pan American Championships in Rio de Janeiro, Castillo helped the Mexican team win the silver medal behind Brazil.

[39] She then won the gold medal in the all-around ahead of Bárbara Domingos and Natália Gaudio and qualified for the 2020 Olympic Games.