Mary Adair (formerly known as Mary Adair Horsechief, born 1936) is a Cherokee Nation educator and painter.
After completing her education, she first taught school and then worked in youth programs.
She served as the director of the Murrow Indian Children's Home at Bacone College, and directed for the Cherokee Nation Jobs Corp Center before becoming the art instructor at Sequoyah High School in Tahlequah, Oklahoma.
Simultaneously, Adair began a career as a professional artist in 1967, winning numerous art prizes and exhibiting mainly in the western part of the United States.
Among the places where her work has been shown are the Cherokee Heritage Center of Park Hill, Oklahoma; the Heard Museum in Phoenix, Arizona; the Museum of the Cherokee Indian at Cherokee, North Carolina; and the Philbrook Museum of Art in Tulsa, Oklahoma.
She has works in the Five Civilized Tribes Museum in Muskogee, Oklahoma, as well as other public collections.
Julie Pearson-Little Thunder interviewed Adair in 2011 as part of Oklahoma State University's Oklahoma Native Artists Oral History Project