Kateryna Zelenykh is a Ukrainian-born Romanian freestyle wrestler. She won the silver medal in the 65kg event at the 2024 European Wrestling Championships held in Bucharest, Romania. She also won the silver medal in the 68kg event in 2025.
She won one of the bronze medals in the women's 59kg event at the 2020 Individual Wrestling World Cup held in Belgrade, Serbia.
At the 2021 U23 World Wrestling Championships held in Belgrade, Serbia, she won the silver medal in the 62kg event. She won one of the bronze medals in the 65kg event at the 2022 U23 World Wrestling Championships held in Pontevedra, Spain. She won the silver medal in the 65kg event at the 2024 European Wrestling Championships held in Bucharest, Romania.