Olga Kotelnikova (Dmitrov, RUS) run at the 2021 Russian Women's Curling Championship came to an end in the semifinals with a 9-1 loss to Anna Sidorova (Sochi, RUS). of the 2021 Russian Women's Curling Championship in Sochi, Russia;
 
Kotelnikova finished 6-3 in the 0-team qualifying round. . In their opening game, Kotelnikova defeated Alina Biktimirova (Moscow, RUS) 10-7, then won 6-4 against Evgenia Mamykina (Moscow, RUS). Kotelnikova went on to lose 8-4 against Margarita Evdokimova (St. Petersburg, RUS). Kotelnikova lost 9-1 to Sidorova where Kotelnikova responded with a 9-7 win over Anastasia Babarykina (St. Petersburg, RUS). Kotelnikova went on to lose 9-2 against Alina Kovaleva (Saint-Petersburg, RUS). Kotelnikova responded with a 10-5 win over Elizaveta Trukhina (Irkutsk, RUS). Kotelnikova won 10-4 against Irina Nizovtseva (St. Petersburg, RUS), then won 9-8 against Vlada Rumiantseva (Dmitrov, RUS) in their final qualifying round match.
 
Kotelnikova ranks 204th overall on the Year-to-Date rankings with 0.000 points earned so far this season.