Anja Renner (born July 1986, in Neuburg an der Donau) is a German paratriathlete competing in the PTVI classification (visual impairment).

She successfully competed in sprint and Olympic distances and qualified for the Ironman 70.3 World Championship.

However, due to her progressive vision loss and the physical demands of the sport, she had to forgo participation in the Ironman World Championship in Hawaii.

In February 2023, Renner transitioned to para sports, setting the ambitious goal of qualifying for the 2024 Paralympic Games in Paris within 18 months.

At the 2024 Paralympic Games in Paris, she won the bronze medal in the PTVI triathlon alongside her guide athlete Maria Paulig.