María Jesús Nieto is a Spanish actress and voice dubbing artist, recognized for her extensive work in the Spanish dubbing industry. Born on January 23, 1961, in Madrid, Spain, she has built a career spanning several decades, lending her voice to numerous characters in film and television. Her professional profile is primarily documented through her contributions to dubbing, where she is noted for having a deep voice type.

Nieto's body of work is extensive and varied, encompassing dubbing for live-action productions and animated features. Her voice is featured in Spanish-language dubs for a wide range of international films and series. Some of her notable credits include providing the Spanish voice for the character Pernille Madsen in the political drama Borgen, for Umm Salamah in the series The State, and for the character Tamar in Marvel's Runaways. In animation, she voiced a character in the 1998 animated film The Magic Journey of Anastasia and is credited as the voice of "Tristeza de Mamá" (Mom's Sadness) in the Spanish dubs of the Pixar films Inside Out and Inside Out 2. Beyond these roles, her career is marked by a long list of credits, including dubbing for the television series Hunter, where she voiced Sergeant Dee Dee McCall.

Throughout her career, Nieto has frequently collaborated on projects that involve a large number of Spanish dubbing actors. Her filmography shows recurring work dubbing actresses such as Petrine Ager in multiple seasons of Borgen and Shohreh Aghdashloo in series like The Flight Attendant and The Mob Doctor, indicating a pattern of being the preferred Spanish dubbing voice for specific actresses. Her continued activity in the industry, with credits as recent as the 2024 film Inside Out 2, demonstrates her sustained presence and ongoing contribution to the field of dubbing in Spain.