Ortiz Monasterio () is a composite Spanish-language surname, comprising the names Ortiz and Monasterio.
People with the surname include: Ángel Ortiz Monasterio (Ortiz Monasterio Irizarri, 1849–1922), Mexican naval officer and politician Fernando Ortiz Monasterio (Ortiz Monasterio y de Garay, 1923–2012), Mexican plastic surgeon Jaime Ortiz Monasterio (Ortiz Monasterio y de Garay, 1928–2001), Mexican architect, worked with Abraham Zabludovsky Luis Ortiz Monasterio (Ortiz Monasterio del Campillo, 1906–1990), Mexican sculptor Pablo Ortiz Monasterio (Ortiz Monasterio Prieto, born 1952), Mexican photographer
See also :es:Categoría:Familia Ortiz Monasterio