Jaqueline Adina Cristian (born 5 June 1998) is a Romanian professional tennis player. She has career-high WTA rankings of No. 28 in singles, achieved on 4 May 2026, and No. 93 in doubles, reached on 23 February 2026. Cristian has won one WTA 125 title, along with 14 singles titles and ten doubles titles on the ITF Women's Circuit.
Cristian made her WTA Tour main-draw debut at the 2015 Bucharest Open in the doubles event, partnering Elena-Gabriela Ruse.
She reached her maiden WTA Tour final at the 2019 Bucharest Open in the doubles event, again partnering Ruse, losing to fourth seeds Viktória Kužmová and Kristýna Plíšková.
2021: Breakthrough and top 75 debut
She reached the quarterfinals of a WTA Tour event for the first time as a qualifier at the WTA 500 St. Petersburg Ladies' Trophy where she lost to fourth seed Svetlana Kuznetsova.
In September, she reached her first semifinal at a WTA Tour-level at the Astana Open. She reached the quarterfinals of the first edition of the Transylvania Open as a wildcard before she lost to top seed Simona Halep. She began a tradition of wearing a Dracula-like cape on court before or after her matches there. She reached the top 100 on 8 November 2021.
At the Linz Open, she reached the final as a lucky loser following Simona Halep's withdrawal due to injury from the semifinal but lost to Alison Riske in three sets. As a result, she moved 29 positions up in the rankings to No. 71 on 15 November 2021, having been ranked world No. 100 at the beginning of the tournament.
2022: Major & WTA 1000 debuts & first wins, hiatus
Cristian made her Grand Slam tournament debut at the Australian Open where she won her first-round match against Greet Minnen, before losing to Madison Keys. As a result, she reached a new career-high ranking of No. 58, on 31 January 2022.
She made her WTA 1000 debut at the Qatar Ladies Open as a lucky loser and defeated 11th seed Elena Rybakina for her first win at this level. Having won the first set, she retired in her second round match against Daria Kasatkina.
She returned after six months of hiatus to make her debut at the US Open, where she lost to second seed Anett Kontaveit.
2023–24: Wimbledon debut, WTA 1000 third rounds & top-10 win
Cristian made her Wimbledon debut at the 2023 Championships, defeating Lucia Bronzetti in the first round, before losing to 13th seed Beatriz Haddad Maia.
A run which included a win over top seed Marie Bouzková, saw Cristian make it through to the semifinals at the 2023 Prague Open, where lost to eventual champion Nao Hibino.
At the end of January 2024, she entered the WTA 500 Linz Open as a lucky loser and defeated Nadia Podoroska, before losing to qualifier Jodie Burrage in the second round.
At the Transylvania Open, she reached the semifinals for the first time in her career at the tournament. She lost to eighth seed Ana Bogdan in three sets.
At the Charleston Open, Cristian defeated three Americans- Sachia Vickery, eighth seed Madison Keys, and 10th seed Emma Navarro- to reach the quarterfinals, losing there to fourth seed Daria Kasatkina.
She reached the third round at the WTA 1000 Madrid Open by defeating Magdalena Fręch and 22nd seed Barbora Krejčíková, before losing to 13th seed Danielle Collins. Despite the loss, she moved up in the top 70 in the rankings. At the next WTA 1000, the Italian Open, she entered the main-draw as a lucky loser replacing Barbora Krejčíková directly into the second round and defeated Elina Avanesyan to reach again the third round, before losing to third seed Coco Gauff.