Ernestina Maenza (22 December 1908 – 25 July 1995) was a Spanish alpine skier. She competed in the women's combined event at the 1936 Winter Olympics with Margot Moles being the first Spanish female to participate in a Winter Olympic Games. She was married with Enrique Herreros mountaineer, humorist, drafter, poster artist, filmmaker and mountaineer, with whom she had a child.