Kathleen Margaret "Katie" Kelly OAM (born 6 February 1975) is an Australian paratriathlete, who has a degenerative disease known as Usher syndrome.

[3] With her guide Michellie Jones, Kelly won gold medals at the 2015 and 2017 ITU World Championships and 2016 Rio Paralympics.

[11] After being diagnosed as legally blind in January 2015, Kelly contacted the Australian Paralympic Committee regarding her eligibility to compete in paratriathlon.

On 13 March 2015, Kelly placed first at the ITU World Paratriathlon held at the Sunshine Coast, Queensland with her guide Laura Cook.

[1][13] In May 2015 it was confirmed that two-time International Triathlon Union (ITU) world champion, Michellie Jones, would be Kelly's new guide in the lead up to the 2016 Summer Paralympics.

[16] She won the bronze medal with guide Holly Grice in the Women's PTV1 at 2018 World Championships at Gold Coast, Queensland after battling a stressed left metatarsal in the lead up to the event.

[18] Kelly's guide for 2020 Summer Paralympics was Briarna Silk and they trained with Triathlon Australia's High Performance Coach Dan Atkins on the Gold Coast.