Tatyana Devyatova

Tatyana Nikolaevna Devyatova (Татьяна Николаевна Девятова, Тетяна Миколаївна Девятова (Костіцина); born 19 September 1948) is a Ukrainian former swimmer. She competed at the 1964 and 1968 Summer Olympics in individual butterfly and 4 × 100 m medley events. She finished in third and fourth place, respectively, in the relay, whereas individually she failed to reach the finals. She won a silver medal in the 4 × 100 m medley relay at the 1966 European Aquatics Championships and finished fourth in the 100 m butterfly.

After marriage she changed her last name to Kostitsyna (Костицина, Костіцина).