Tatiana Stepovaya (Russian: Татьяна Юрьевна Степовая; born 23 September 1965 in Krasnodar, also Tatiana Stepovaya-Dianchenko) is a Russian chess player who holds the title of the FIDE title of Woman Grandmaster (WGM).

Many international chess tournament winner: divided the first place with Alisa Galliamova in Rostov-on-Don (1995), won in Tallinn (2002) and won Elisaveta Bykova Memorial in Vladimir (2006).

In 2000 in Batumi Stepovaya reached inaugural European Individual Women Chess Championship semi-final, where lost to Natalia Zhukova, and together with the Women's World Chess ex-Champion Maia Chiburdanidze divided 3rd-4th place.

In 2001 Stepovaya with Yugoslavian chess club Agrouniverzal Zemun won the European Chess Club Cup for women.

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