Guillermina Moragues (3 October 1920 – 14 March 2014), better known as Myrna Mores, was an Argentine actress and singer.

She performed on stage in the play La historia del tango.

At the end of the 1960s, she acted in the successful television series La familia Mores.

Her discography is scarce, but there is the song "Tan solo tú", with Francisco Canaro, "Tormenta en el Alma", with Ernesto Famá and "Apasionadamente".

In 2006 she performed at the Teatro Opera interpreting Cuartito Azul, the theme that Mariano Mores dedicated to her.