Kateryna Dikidzhi (Ukrainian: ???????? ???????; born July 11, 1991) is a Ukrainian swimmer, who specialized in sprint freestyle events.
She sprinted to two gold medals in the 50 and 100 m freestyle at the 2007 European Junior Swimming Championships in Antwerp, Belgium, with respective times of 25.95 and 56.51.As a 17-year-old teen, Dikidzhi teamed up with Darya Stepanyuk, Nataliya Khudyakova, and Hanna Dzerkal for the Ukrainian squad in the women's 4 × 100 m freestyle relay at the 2008 Summer Olympics in Beijing.
Swimming the second leg, Dikidzhi recorded a split of 55.44 seconds, and the Ukrainian went on to finish the prelims in fourteenth overall with a final time of 3:44.72.