Tatyana Kosterina

Tatyana Vladimirovna Kosterina (; born 17 July 1977) is a Russian dressage rider. She competed at the 2018 World Equestrian Games, multiple European Dressage Championships, and competed as part of the Russian dressage team at the delayed Tokyo 2020 Olympic Games.

Kosterina made her championships debut at the 2017 European Championships in Gothenburg, Sweden, where she placed 18th individually aboard Diavolessa and was the highest ranked Russian athlete. She went on to compete with Diavolessa at the 2018 World Equestrian Games and the 2019 European Championships, where she finished 35th and 33rd individually, respectively. Her highest team placing came at the 2019 Europeans, when the Russian team finished 9th.

Kosterina has been living and training in Germany since 2007. In May 2025, she acquired German citizenship in addition to her Russian citizenship, and as of July 2025, her sporting nationality is also German.