Mary Adair (also known as Mary Adair Horsechief, born 1936) is a Cherokee Nation educator and painter based in Oklahoma. After completing her education, she first taught school and then worked in youth programs. She served as the director of the on the Bacone College campus in Muskogee, Oklahoma, and directed for the Cherokee Nation Jobs Corp Center before becoming the art instructor at Sequoyah High School in Tahlequah, Oklahoma.