Loretta Mae Long (née Moore) is an American actress, voice artist, singer, media personality, and educator. She has played the character of Susan Robinson on Sesame Street since its debut in 1969.
Long earned her Ph.D. in urban education in 1973 from the University of Massachusetts Amherst while she was starring on Sesame Street. She has acted in musicals (such as Guys and Dolls) and appeared on the Flip Wilson Show with other Sesame Street cast members during its first season.