Niina Petrõkina (born 14 August 2004) is an Estonian figure skater. She is the 2021 CS Warsaw Cup silver medalist, the 2021 CS Cup of Austria and 2021 CS Golden Spin of Zagreb bronze medalist, and the 2022 Estonian national champion. She has competed in the final segment at three ISU Championships, finishing in the top ten at the 2022 Europeans and 2022 Junior Worlds.