Olga Costa (August 28, 1913 – June 28, 1993) was a Mexican painter and cultural promoter. She began to study art at the Academy of San Carlos but left after only three months to help support her family. However, she met her husband, artist José Chávez Morado during this time. Her marriage to him involved her in Mexico's cultural and intellectual scene and she began to develop her ability to paint on her own, with encouragement from her husband. She had numerous exhibitions of her work in Mexico, with her work also sent to be sold in the United States. She was also involved in the founding and development of various galleries, cultural societies and three museums in the state of Guanajuato. She received the Premio Nacional de Ciencias y Artes among others for her work.