Ryan Robertson (born October 2, 1976) is an American former professional basketball player who was selected by the Sacramento Kings in the 2nd round (45th pick) of the 1999 NBA Draft. He played college basketball at Kansas University under coach Roy Williams. He scored a career high 31 points in a second round loss to Kentucky in the 1999 NCAA Tournament. Robertson also played varsity basketball for four years at St. Charles West High School from 1991-1995. During his tenure at St. Charles West the basketball team made it to the final four in the Missouri State Championship for the first time. Robertson led the team to the State Championship in 1995. He played one game for the Sacramento Kings during the 1999-2000 NBA season, scoring five points. He later played professionally for the American Basketball Association team Kansas City Knights during the 2000-2001 season. After one season with the Kansas City minor league team, he then moved to Europe to play in the Netherlands for EiffelTowers Nijmegen during the 2001-04 seasons. He finished his professional career playing for Panellinios B.C. (Greece) and Cholet Basket (France) during the 2004-05 season.