Sy Olivia Smith-Peterson (born February 18, 1978) is an American singer, songwriter, musician, actress, and music producer. Sy Smith has released four albums and twenty singles during her career. She is also the president of her own recording label, Psyko! Incorporation. In addition, Smith has composed and written songs for many singers including Carlos Santana, Brand New Heavies, Mýa, Terry Lewis, and many other recording artists.

Smith's musical genre has varied throughout her career including R&B, Go-go, soul, funk, jazz, and neo soul. Her artistic influences include Michael Jackson, Minnie Riperton, Sly Stone, Diana Ross, Chuck Brown, LaBelle, and Sheila E.. Smith has pioneered in the sound "Electrosoul" and "Futuristic soul", an amalgam of funk, neo soul, and R&B that has influenced many other musicians. She was also a key figure in the rise of the "Indie Soul" movement.