Triathlon is one of the sports at the quadrennial Commonwealth Games competition. It was first granted Commonwealth Games sport status in 2002. It is an optional sport which may, or may not, be included in each competition's sporting programme.
At the 1990 Commonwealth Games at Auckland, the Triathlon was a demonstration event; won by Erin Baker (women) and Rick Wells (men), both from New Zealand.
Updated after the 2014 Commonwealth Games