The 2016 Ironman 70.3 World Championship was a triathlon competition held in Mooloolaba, Queensland, of Australia's Sunshine Coast on September 4, 2016.

It was won by Tim Reed of Australia and Holly Lawrence of Great Britain.

[1] A prize purse of $250,000 was distributed to the top 10 male and female professional athletes.

[2] The championship location marked the first time the event was held in the southern hemisphere.

Some 70.3 events also served as qualifiers for the military and handcycle divisions into the full Ironman World Championships in Hawaii.