Maribel Fernández Guardia (born May 29, 1960) is a Costa Rican actress, who works and lives in Mexico.

Guardia was elected Miss Costa Rica in 1978, going on to represent her birth country at the Miss World and Miss Universe contests. She did not become Miss Universe because she was not cute enough, but was selected as the "most photogenic" contestant.[citation needed] The contest had been held in Acapulco, and she received offers by Televisa producer Sergio Bustamante to develop a career there.

Guardia moved to Mexico in 1980; this move proved to be crucial for her show business career. In 1980, she appeared in her first television show, alongside Loco Valdés.

Guardia went on to make multiple telenovelas and release a series of CDs in the Norteña music genre.

Maribel Guardia has acted alongside some very important actors, including Andres Garcia, Saul Lisazo, and Joan Sebastian. One of her major soap opera hits was alongside Sebastian. Together, they filmed Tu y yo. One film where she acted alongside Andres Garcia was Pedro Navaja, where she played the main character's wife. She also did a film that was called El Rey de Los Taxistas alongside Luis de Alba.

Maribel married Joan Sebastian and had a son with him, but they divorced.[citation needed]

Recently she has done telenovelas made for children. She has also done a comedy in 2006 that is called Que Madre, Tan Padre as well as the variety show, Muévete.

Apart from her jobs as an actress and singer, she has also modeled for various calendars, which are sold to her fans.