Alberto Mielgo (born April 29, 1979) is a Spanish-born American animation director, artist, and animator. His accolades include an one Academy Award, four Emmy Awards and two Annie Awards.

Born and raised in Spain, Mielgo is currently established in Los Angeles, after having worked and lived in various countries of Asia and Europe.

Mielgo won a Primetime Emmy Award (2013), and an Annie Award (2013) for his work on Disney's Tron: Uprising as Best Production Designer. Mielgo won three Emmy Awards (2019) for Best Animated Short, Best Art Direction, Best Animation, and an Annie award (2019) for Best Art Direction of "The Witness" episode for Netflix Animation anthology Love, Death & Robots. In March 2022, he won an Academy Award for Best Animated Short Film for The Windshield Wiper. In September 2022, the "Jibaro" episode of Love, Death, & Robots, written and directed by Mielgo, won the 2022 Primetime Emmy Award for Outstanding Short Form Animated Program.