Ekaterina Olegovna Efimova (Russian: Екатерина Олеговна Ефимова; born 3 July 1993) is a Russian volleyball player for Beşiktaş Ayos and the Russian national team.

She participated at the 2017 Women's European Volleyball Championship.

[1] and 2018 FIVB Volleyball Women's Nations League.

[2]