Sanford Plummer (Ga-yo-gwa-doke; 1905–1974) (Seneca) was a Native American narrative watercolor painter from New York state. He painted works portraying traditional life and culture of the Seneca and people of other Iroquois nations. His works are held by the Iroquois Indian Museum, as well as Buffalo Museum of Science, Rochester Museum and Science Center, and the Newark Museum.