Kathleen Margaret "Katie" Kelly (born 6 February 1975) is an Australian paratriathlete, who has a degenerative disease known as Usher syndrome. Kelly began competing in the PT5 paratriathlon classification in February 2015 when her condition deteriorated to a legally blind state. She has just 30 per cent of her vision. With her guide Michellie Jones, Kelly won gold medals at the 2015 and 2017 ITU World Championships and 2016 Rio Paralympics.