Santino Quaranta (born October 14, 1984 in Baltimore, Maryland) is an American soccer player who currently plays for D.C. United in Major League Soccer.

Quaranta partially attended Baltimore's Archbishop Curley High School for his freshman and sophomore years, where he started both years, and was recognized as one of the top soccer players in the state. Quaranta did not play college soccer, and instead spent time with the US U-17 national team at the IMG Soccer Academy in Bradenton, Florida, where he achieved exceptional success.

Quaranta was drafted eighth overall in the 2001 MLS SuperDraft by D.C. United. At 16 years, four months, Quaranta surpassed fellow DC player Bobby Convey to become the youngest player in the history of Major League Soccer, a record which would subsequently be taken by another DC player, Freddy Adu.