Boryana Kaleyn

Boryana Nikolaeva Kaleyn (; born 23 August 2000) is a Bulgarian retired individual rhythmic gymnast. She is the 2024 Paris Olympic all-around silver medalist. She is the 2023 European all-around champion, the 2024 European champion with hoop, the 2021 and 2022 European all-around silver medalist, and the 2022 European champion with ball, ribbon, and in the team competition. Kaleyn is also the 2023 World Team all-around champion and the 2022 World Cup Series all-around champion in Sofia and runner-up in Baku.

She competed at the 2020 Summer Olympics, finishing fifth in the all-around. At the national level, she is a four-time Bulgarian National Champion (in 2019, 2020, 2021, and 2022), twice silver medalist (in 2018 and 2023) and once bronze medalist (in 2017).