Gladys Yolanda del Río Uribe (December 29, 1941 – October 30, 2021) was a Chilean actress and comedian.

She married fellow actor and musician Jorge Pedreros in 1967, with whom she had a daughter called Claudia.

There, she took her first steps on the stage, since she was one of the founders of Teknos, the university theater, where she acted alongside Sonia Viveros, Gabriela Medina and Luis Alarcón.

However, she became recognized the following year when she joined the humorous television program Jappening con Ja, which had been created by her husband along with Fernando Alarcón and Eduardo Ravani in the late 1970s.

In the program, del Río stood out for her character as "Señora Pochi" in the popular sketch "La Oficina", as well as other characters such as "Mama Show", "Tranquilina", "Yolanda Motocinos", "Maruja" or the "Mamá de Pequitas" after more than 20 years on the show.