| Olga Ianchuk Ольга Янчук | |
| Birth Date: | 29 March 1995 |
| Birth Place: | Kyiv, Ukraine |
| Turnedpro: | 2011 |
| Plays: | Right-handed (two-handed backhand) |
| Careerprizemoney: | $141,054 |
| Singlestitles: | 11 ITF |
| Highestsinglesranking: | No. 213 (14 August 2017) |
| Australianopenjuniorresult: | Q3 (2010) |
| Frenchopenjuniorresult: | Q1 (2011) --> |
| Doublestitles: | 4 ITF |
| Highestdoublesranking: | No. 254 (19 October 2015) |
| Australianopendoublesjuniorresult: | 1R (2010) --> |
Olga Yuriyivna Ianchuk (uk|Ольга Юріївна Янчук, born 29 March 1995) is a Ukrainian former professional tennis player.
Ianchuk has career-high WTA rankings of 213 in singles, achieved in August 2017, and 254 in doubles, reached in October 2015. In her career, she won eleven singles and four doubles titles on tournaments of the ITF Circuit.
Ianchuk made her WTA Tour main-draw debut at the 2015 Baku Cup in the doubles event, partnering Oleksandra Korashvili.
Her older sister Elizaveta Ianchuk is also a professional tennis player.
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| Result | No. | Date | Tournament | Surface | Opponent | Score | |
|---|---|---|---|---|---|---|---|
| Win | 1. | Oct 2011 | ITF Minsk, Belarus | Carpet |  Julia Valetova | 6–3, 4–6, 6–4 | |
| Win | 2. | Oct 2012 | ITF Antalya, Turkey | Clay | Demi Schuurs | 6–2, 2–6, 6–3 | |
| Win | 3. | Oct 2012 | ITF Antalya | Clay |  Diana Buzean | 3–6, 6–4, 6–4 | |
| Win | 4. | May 2013 | ITF Antalya | Hard |  Zuzana Zlochová | 6–3, 6–3 | |
| Win | 5. | May 2013 | ITF Antalya | Hard |  Martina Kubiciková | 6–3, 7–6(4) | |
| Win | 6. | Feb 2014 | ITF Stockholm, Sweden | Hard (i) | Kateřina Vaňková | 6–0, 6–0 | |
| Loss | 1. | Jun 2014 | ITF Bol, Croatia | Clay | 3–6, 6–2, 2–6 | ||
| Loss | 2. | Sep 2014 | Batumi Ladies Open, Georgia | Hard |  An-Sophie Mestach | 2–6, 0–6 | |
| Loss | 3. | Dec 2014 | ITF İstanbul, Turkey | Hard (i) | Jana Fett | 2–6, 4–6 | |
| Win | 7. | Mar 2015 | ITF Amiens, France | Clay (i) |  Alizé Lim | 3–6, 6–3, 6–4 | |
| Win | 8. | Mar 2015 | ITF Gonesse, France | Clay (i) | Michaela Hončová | 3–6, 7–5, 6–3 | |
| Win | 9. | Mar 2017 | ITF Heraklion, Greece | Clay | Miriam Kolodziejová | 6–3, 6–2 | |
| Loss | 4. | Apr 2017 | ITF Qarshi, Uzbekistan | Hard | Polina Monova | 6–4, 3–6, 3–6 | |
| Loss | 5. | Jun 2017 | ITF Warsaw, Poland | Clay |  Martina Trevisan | 2–6, 4–6 | |
| Win | 10. | Jul 2017 | ITF Moscow, Russia | Clay |  Valentyna Ivakhnenko | 4–6, 6–0, 7–6(5) | |
| Loss | 6. | Sep 2017 | ITF Kyiv, Ukraine | Clay |  Sviatlana Pirazhenka | 4–6, 4–6 | |
| Win | 11. | Aug 2018 | ITF Warsaw, Poland | Clay |  Victoria Bosio | 6–3, 4–6, 6–3 |
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| Outcome | No. | Date | Tournament | Surface | Partner | Opponents | Score | |
|---|---|---|---|---|---|---|---|---|
| Runner-up | 1. | 3 October 2011 | ITF Yerevan, Armenia | Clay | Elizaveta Ianchuk |  Tatia Mikadze Sofia Shapatava | 1–6, 4–6 | |
| Runner-up | 2. | 31 October 2011 | ITF Minsk, Belarus | Carpet (i) | Lidziya Marozava | Polina Monova Anna Smolina | 3–6, 4–6 | |
| Winner | 1. | 13 May 2013 | ITF Antalya, Turkey | Hard | Darya Lebesheva |  Nozomi Fujioka Hirono Watanabe | 3–6, 7–5, [10–8] | |
| Winner | 2. | 27 May 2013 | ITF Adana, Turkey | Hard | Zuzana Zlochová |  Sultan Gonen Julia Stamatova | 6–2, 7–5 | |
| Runner-up | 3. | 29 July 2013 | ITF Rovereto, Italy | Clay | Chantal Škamlová | Martina Caregaro Anna Floris | 6–3, 4–6, [6–10] | |
| Runner-up | 4. | 12 October 2013 | ITF Moscow, Russia | Clay |  Anett Kontaveit | Anna Shkudun Alyona Sotnikova | 3–6, 4–6 | |
| Winner | 3. | 20 January 2014 | ITF Kaarst, Germany | Carpet | Nastja Kolar | Vivian Heisen Linda Prenkovic | 7–5, 6–3 | |
| Runner-up | 5. | 17 February 2014 | ITF Helsingborg, Sweden | Hard |  Jasmina Tinjic |  Cornelia Lister Lisanne van Riet | 4–6, 3–6 | |
| Winner | 4. | 12 May 2014 | ITF Bastad, Sweden | Clay | Carolin Daniels | Anna Smolina Liubov Vasilyeva | 6–4, 6–3 | |
| Runner-up | 6. | 19 May 2014 | ITF Bol, Croatia | Clay | Christina Shakovets |  Emma Laine Eugeniya Pashkova | 4–6, 0–6 | |
| Runner-up | 7. | 2 June 2014 | ITF Bol, Croatia | Clay | Christina Shakovets | Lenka Kunčíková Karolína Stuchlá | 6–0, 1–6, [8–10] | |
| Runner-up | 8. | 8 November 2014 | ITF Sharm El Sheikh, Egypt | Hard | Nastja Kolar | Antonia Lottner Laura Siegemund | 1–6, 1–6 | |
| Runner-up | 9. | 15 March 2015 | ITF Amiens, France | Clay (i) | Elizaveta Ianchuk |  Ilka Csoregi Eleni Daniilidou | 1–6, 4–6 | |
| Runner-up | 10. | 22 March 2015 | ITF Gonesse, France | Clay (i) | Elizaveta Ianchuk | Ágnes Bukta Oana Georgeta Simion | 4–6, 6–3, [6–10] | |
| Runner-up | 11. | 3 May 2015 | ITF Charlottesville, U.S. | Clay | Irina Khromacheva |  Françoise Abanda  Maria Sanchez | 1–6, 3–6 | |
| Runner-up | 12. | 31 May 2015 | ITF Moscow, Russia | Clay | Daria Kasatkina | Carolin Daniels Alyona Sotnikova | 2–6, 6–7(10) | |
| Runner-up | 13. | 13 June 2015 | ITF Minsk, Belarus | Clay | Daria Kasatkina | Valentyna Ivakhnenko Polina Monova | 6–4, 0–6, [10–12] | |
| Runner-up | 14. | 18 September 2015 | ITF Bucha, Ukraine | Clay | Victoria Kan | Alona Fomina Oleksandra Korashvili | 4–6, 3–6 | |
| Runner-up | 15. | 25 September 2015 | ITF Bucha, Ukraine | Clay | Anastasiya Vasylyeva | Ekaterine Gorgodze Sofia Shapatava | 5–7, 2–6 | |
| Runner-up | 16. | 20 August 2016 | ITF Leipzig, Germany | Clay | Michaela Hončová | Nicola Geuer Anna Klasen | 6–7(4), 5–7 | |
| Runner-up | 17. | 25 March 2017 | ITF Heraklion, Greece | Clay | Despina Papamichail |  Mira Antonitsch  Karman Kaur Thandi | 0–6, 3–6 |