Nadiia Viktorivna Kichenok (, born 20 July 1992) is a Ukrainian professional tennis player. On 6 January 2014, she reached a career-high singles ranking of world No. 100. On 31 January 2022, she peaked at No. 29 in the WTA doubles rankings. Kichenok has won nine doubles titles on the WTA Tour, including four with her twin sister Lyudmyla. She has also won four singles titles and 24 doubles titles on the ITF Women's Circuit.
Career
Playing for Ukraine Fed Cup team, Nadiia Kichenok has a win–loss record of 6–6.
In 2015, Nadiia and Lyudmyla came back from a 0–5 deficit in the second set tie-break of their 6–4, 7–6 defeat of Liang Chen and Wang Yafan in the Shenzhen Open final. That made the Kichenoks the second pair of twins, after Karolína and Kristýna Plíšková, to win a WTA Tour doubles title. They had previously been runners-up at Tashkent in 2011, and at Shenzhen in 2014.
At the inaugural edition of the Tallinn Open in 2022, seeded third with her sister, she won her eighth title defeating top seeds Nicole Melichar and Laura Siegemund in the final.
At the 2023 Ladies Linz, she reached the final with Anna-Lena Friedsam. At the inaugural edition of the Texas Open in Austin, she finished in the semifinals, also with Friedsam.
Apparel and equipment
Nadiia Kichenok is sponsored by Mizuno and Wilson (racket).
Performance timelines
Singles
Doubles
Significant finals
WTA Elite Trophy
Singles: 1 (title)
WTA Tour finals
Doubles: 18 (9 titles, 9 runner-ups)
WTA 125 finals
Doubles: 2 (2 runner-ups)
ITF Circuit finals
Singles: 11 (4 titles, 7 runner–ups)
Doubles: 46 (24 titles, 22 runner–ups)