Ekaterina Andreevna Bychkova (Екатерина Андреевна Бычкова; born 5 June 1985) is a Russian former professional tennis player.

In her career, Bychkova won ten singles and five doubles titles on the ITF Women's Circuit.

On 20 February 2006, she reached her best singles ranking of world No.

Bychkova defeated defending champion Svetlana Kuznetsova in the first round of the 2005 US Open.

[3] Bychkova returned to the circuit in February 2021, competing on the ITF Women's World Tour until October 2021.