Tetyana Yuriivna Melnyk (Ukrainian: Тетяна Юріївна Мельник; born 2 April 1995) is a Ukrainian track and field sprinter and hurdler who competes in the 400 metres flat and 400 metres hurdles.

She represented her country at the 2016, 2020, and 2024 Summer Olympics.

[2] She competed in the hurdles at the 2014 World Junior Championships in Athletics, reaching the semi-finals.

She was part of the Ukrainian 4 × 400 metres relay team at the 2016 European Athletics Championships with Yuliya Olishevska, Olha Bibik and Olha Zemlyak.

Alina Lohvynenko replaced Olishevska for the Ukrainian Olympic team that took fifth in the relay final.