Petteri Johannes Koponen (born 13 April 1988) is a Finnish professional basketball player for Bayern Munich of the Basketball Bundesliga (BBL) and the EuroLeague. Standing at 1.94 m (6 ft 4 ⁄2 in), he plays both point guard and shooting guard positions. He was drafted as the 30th pick by the Philadelphia 76ers in the 2007 NBA draft, and his NBA rights are currently held by the Dallas Mavericks.
His first club was Malmi Super-Koris ("Malmi super-basketball"), from where he joined one of Finland's top clubs, Espoo Honka in 2004–05 season. Under the guidance of coach Mihailo Pavićević he quickly developed into a key component of Honka's 2006–07 Finnish League championship-winning side. During the 2006–07 campaign Koponen averaged 12.4 points, 2.4 rebounds and 3.7 assists per game. The number of assists may sound small, but in Finland assists are harder to come by than in the NBA because of the difference in FIBA rules, and the league leader had an average of only 5 assists.