Yekaterina Sergeyevna Avvakumova (Russian: Екатерина Сергеевна Аввакумова, Korean: 예카테리나 세르게예브나 아바쿠모바, romanized: Yekʰat'erina Sŭrŭgeyebŭna Abakʰumoba, born 26 October 1990) is a Russian-born South Korean biathlete.

She obtained Korean citizenship in 2017.

[2] In the 2025 Asian Winter Games she won South Korea’s first gold medal in biathlon at any Asian Winter Games.

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