The Maria Mitchell Association Aquarium (MMA Aquarium), also known as the Nantucket Aquarium, is a small, local, seasonal aquarium in Nantucket, Massachusetts. It serves as the island's only marine science center and resource. It is part of the Maria Mitchell Association, a local, non-profit organization based in Nantucket that follows the legacy of Maria Mitchell (1818-1889), America's first female astronomer and professor at Vassar College who also had an interest in marine biology and general ecology.