Matilde Yotzmit Ramírez Islas, known professionally as Yotzmit Ramírez, is a Mexican actress of dubbing and locutora with a career spanning over two decades. She began her path in the dubbing industry in 1996, aided by her friendship with Gabriel Cobayassi, and holds a certification as a locutora received in 1995. Her educational background includes a degree in Communication and Public Relations, as well as a Master's in Organizational Communication, where she earned an honorable mention for being the most outstanding student in her generation.

Ramírez has built a prolific career lending her voice to a wide array of characters in film, television, and video games. She is widely recognized for being the Spanish voice of Virginia "Pepper" Potts / Rescue in the Marvel Cinematic Universe, a role she has performed across multiple productions. Other prominent film roles include Jeanette in the Alvin and the Chipmunks film series and Jane Banks in The Return of Mary Poppins. In animation, she is known for voicing Abbey Bominable in the Monster High series. On television, she has provided the Mexican Spanish voice for Penélope García in the long-running series Criminal Minds and its spin-offs, as well as Tori Hanson in Power Rangers: Ninja Storm. Her work also extends to video games, with credits including Quantum Break, Dishonored 2, and Star Wars: Battlefront II.

Beyond these roles, Ramírez has established recurring collaborations in dubbing, serving as the regular Spanish voice for actresses such as Christina Applegate, Gwyneth Paltrow, Perrey Reeves, and Michelle Monaghan. Her vocal qualities are often described as elegant and friendly, though she demonstrates versatility in her dubbing work, such as using a lower tone and a Russian accent for the character Abbey Bominable.

In addition to her work in entertainment, Ramírez is a highly active commercial voice artist, having recorded for major brands including Fanta, Coca-Cola, L'Oréal, and Pond's, among others. She has also narrated over 30 audiobooks and contributed voice work for museums and e-learning platforms. Her professional activities extend to the film festival circuit, where she has served as a press coordinator for festivals such as the Morelia International Film Festival and the Los Cabos International Film Festival, and has worked in marketing and cultural communications for the Mexican Academy of Cinematographic Arts and Sciences. In 2023 and 2025, she gained further public recognition as one of the voices of "La Jefa," the omnipistent narrator for the reality television series La Casa de los Famosos México. In 2025, she also publicly advocated for the regulation of artificial intelligence in the entertainment industry to protect the rights and livelihoods of voice actors.

While she has an extensive body of work, her portrayal of the character Kuina, also known as Indicus, in the series Log Horizon: Destruction of the Round Table is not documented in the available professional profiles and filmographies.