The 2009 ITU World Championship Series was a series of seven triathlon events leading to a Grand Final held in Gold Coast, Queensland, Australia in September 2009. The series was organised under the auspices of the world governing body of triathlon – the International Triathlon Union (ITU) – and was sponsored by Dextro Energy. The 2009 World Championship Series (WCS) was the first year of a change in format replacing the single World Championship race of prior years. Additionally, points accumulated in 2009 ITU Triathlon World Cup events would contribute to an athlete's overall point total in the Championship Series.