| Fullname: | Kateryna Istomina |
| Nationality: | Ukrainian |
| Strokes: | Freestyle, breaststroke, backstroke, butterfly |
| Club: | Invasport, Kyiv |
| Birth Date: | 7 March 1994 |
| Birth Place: | Kyiv, Ukraine |
| Show-Medals: | yes |
Kateryna Istomina (born 7 March 1994) is a Paralympic swimmer from Ukraine. She competes in S8 and SM8 (individual medley) events.[1]