Jonny had to serve a 15-second penalty midway through the final, running stage of the race but still managed to clinch third.
He tweeted: "Wow! What a triathlon today. Great support and great race. I am so happy with my olympic bronze medal!! #teamgb"
The Yorkshire triathlete delayed the medal ceremony as he had to be medically checked after the race. He was given the all-clear and received his bronze medal on the podium.