Glaiza Castro Galura-Rainey, professionally known by her stage name Glaiza de Castro, is a Filipino actress and singer. She is known for playing various roles in television and mainstream, independent and sociopolitical films. Her performances have earned her accolades, including a Luna Award and a Facine Film Festival Award, as well as several FAMAS Awards and Gawad Urian Awards nominations.
At age 13, de Castro made her first screen appearance in the series Kasangga. She continued playing minor and supporting roles in the succeeding years and rose to fame after playing Eunice Aragon in the series Stairway to Heaven. The following year, de Castro starred in her first titular role, Grazilda, and played Binayaan in the historical epic series Amaya. She gained further recognition as Heidi Fernandez in the series Temptation of Wife. Her performance earned her a nomination at the Golden Screen TV Awards for Outstanding Supporting Actress in a Drama Series. In 2015, she starred alongside Rhian Ramos in the first lesbian series in the Philippines, The Rich Man's Daughter.