Alena Sergeyevna Kostornaia (born 3 May 2003) is a Russian figure skater. She is the 2018 World Junior champion, the 2017–18 Grand Prix Final silver medalist, the 2017 Rostelecom Cup champion, and a two-time Russian national champion (2018, 2019).
Unleashing Alena Kostornaia: A Spectacular Quiz on the Rising Star of Russian Figure Skating