Hanna Serhiyivna Poznikhirenko (; born 8 April 1994) is an inactive Ukrainian tennis player.
She has career-high WTA rankings of 255 in singles, achieved on 28 May 2018, and of 214 in doubles, reached on 27 August 2018. During her career, she has won four singles titles and eleven doubles titles on the ITF Women's Circuit.
Poznikhirenko won her first $60k title in 2018 at the Internazionali di Brescia in the doubles draw, partnering Cristina Dinu.