Luca Udvardy (born 4 November 2005) is a Hungary junior female tennis player.
Udvardy has a career high ITF junior combined ranking of 14 achieved on 31 October 2022.
Udvardy made her WTA Tour debut at the 2021 Budapest Grand Prix where she received a wildcard to the doubles main draw.
She was runner-up in the 2022 Wimbledon girls' singles, losing to Liv Hovde in the final.
Her older sister Panna Udvardy is also a professional tennis player.
| {class="wikitable" style="font-size:85%" !Legend |
| W35 tournaments (1–0) |
| W15 tournaments (4–1) |
| Clay (5–1) |
| Win | 1–0 | Jun 2023 | ITF Alkmaar, Netherlands | W15 | Clay | Caijsa Hennemann | 6–1, 7–5 |
| Win | 2–0 | Jul 2023 | ITF Savitaipale, Finland | W15 | Clay | Sabina Dadaciu | 6–0, 6–2 |
| Loss | 2–1 | Sep 2024 | ITF Kuršumlijska Banja, Serbia | W15 | Clay | Natalija Senić | 4–6, 2–6 |
| Win | 3–1 | Mar 2025 | ITF Alaminos, Cyprus | W15 | Clay | Jessica Bertoldo | 6–1, 7–5 |
| Win | 4–1 | Jun 2025 | ITF Osijek, Croatia | W15 | Clay | Eszter Méri | 3–6, 6–2, 6–3 |
| Win | 5–1 | Nov 2025 | ITF Orlando, United States | W35 | Clay | Martha Matoula | 6–3, 6–3 |
| {class="wikitable" style="font-size:85%" !Legend |
| W75 tournaments (0–1) |
| W15 tournaments (2–0) |
| Hard (1–0) |
| Clay (1–1) |
| Win | 1–0 | Feb 2023 | ITF Sharm El Sheikh, Egypt | W15 | Hard | Emilie Lindh | Aleksandra Pospelova Nina Rudiukova | 6–4, 5–7, 10–3 |
| Win | 2–0 | Jul 2023 | ITF Savitaipale, Finland | W15 | Clay | Laura Hietaranta | Weronika Baszak Anet Angelika Koskel | 6–1, 6–2 |
| Loss | 2–1 | Mar 2025 | Székesfehérvár Open, Hungary | W75 | Clay (i) | Panna Udvardy | Irina Bara Ekaterine Gorgodze | 7–6(7), 3–6, 3–10 |
| Loss | 2022 | Wimbledon | Grass court | Liv Hovde | 3–6, 4–6 |
| Grade A |
| Grade 1 |
| Grade 2 |
| Grade 4 |
| Grade 5 |
| Win | 1–0 | Nov 2019 | ITF St. Johns, Antigua and Barbuda | Grade 5 | Hard | Hana Gamracy | 6–4, 6–3 |
| Loss | 1–1 | Sep 2020 | ITF Doha, Qatar | Grade 4 | Hard | Dimitra Pavlou | 3–6, 2–6 |
| Loss | 1–2 | Sep 2020 | ITF Tirana, Albania | Grade 5 | Hard | Leyla Nilufer Elmas | 4–6, 1–6 |
| Loss | 1–3 | Oct 2020 | ITF Ulcinj, Montenegro | Grade 4 | Clay | Mia Ristić | 3–6, 2–6 |
| Loss | 1–4 | Jan 2021 | ITF Nairobi, Kenya | Grade 4 | Clay | Angella Okutoyi | 1–6, 4–6 |
| Win | 2–4 | Jan 2022 | ITF Salinas, Ecuador | Grade 1 | Hard | Madeleine Jessup | 6–4, 7–6(7–4) |
| Loss | 2–5 | Jul 2022 | Wimbledon, UK | Grand Slam | Grass | Liv Hovde | 3–6, 4–6 |
| Win | 1–0 | Nov 2019 | ITF St. Johns, Antigua and Barbuda | Grade 5 | Hard | Artemis Pados | Sifa Butcher Hana Gamracy | 6–4, 5–7, 10–7 |
| Loss | 1–1 | Nov 2019 | ITF Llanos de Curundu, Panama | Grade 5 | Clay | Rachel Heřmanova | Jennifer Kida Ana Carmen Zamburek | 3–6, 0–6 |
| Loss | 1–2 | Feb 2020 | ITF Kaarina, Finland | Grade 4 | Hard (i) | Kristina Paskauskas | Peppi Ramstedt Stella Remander | 0–6, 6–1, 6–10 |
| Loss | 1–3 | Sep 2020 | ITF Larnaca, Cyprus | Grade 4 | Hard | Daria Frayman | Despoina Mastrodima Dimitra Pavlou | |
| Win | 2–3 | Sep 2020 | ITF Larnaca, Cyprus | Grade 4 | Hard | Maria Constantinou | Lara Bakhaya Lucy Webber | 4–6, 6–2, 10–7 |
| Win | 3–3 | Sep 2020 | ITF Tirana, Albania | Grade 5 | Hard | Leyla Nilufer Elmas | Diana De Simone Victoria Lazarova | 6–0, 6–2 |
| Win | 4–3 | Sep 2020 | ITF Tirana, Albania | Grade 5 | Hard | Leyla Nilufer Elmas | Nisa Bulut Ada Karabacak | 4–6, 6–2, 11–9 |
| Win | 5–3 | Oct 2020 | ITF Ulcinj, Montenegro | Grade 4 | Clay | Maëlie Monfils | Alla Betina Divna Ratković | 0–4, 5–3, 10–6 |
| Loss | 5–4 | Apr 2021 | ITF Haskovo, Bulgaria | Grade 2 | Clay | Raquel González Vilar | Lisa Pigato Arianna Zucchini | 1–6, 6–3, 11–13 |
| Win | 6–4 | Jan 2022 | ITF San José, Costa Rica | Grade 1 | Hard | Nikola Daubnerová | Gabriella Broadfoot Elisabeth Jones | 2–6, 6–1, 11–9 |
| Win | 7–4 | Jan 2022 | ITF Salinas, Ecuador | Grade 1 | Hard | Renáta Jamrichová | Daniella Ben-Abraham Yichen Zhao | 6–0, 6–0 |
| Win | 8–4 | Feb 2022 | ITF Lambaré, Paraguay | Grade 1 | Clay | Nina Vargová | Nikola Daubnerová Amélie Šmejkalová | 7–6(7–5), 6–1 |
| Loss | 8–5 | Apr 2022 | ITF Beaulieu-sur-Mer, France | Grade 1 | Clay | Renáta Jamrichová | Alevtina Ibragimova Malwina Rowińska | 6–4, 5–7, 7–10 |
| Win | 9–5 | May 2022 | ITF Santa Croce sull'Arno, Italy | Grade 1 | Clay | Tereza Valentová | Nikola Daubnerová Céline Naef | 6–4, 5–7, 10–6 |
| Win | 10–5 | Aug 2022 | ITF Pretoria, South Africa | Grade A | Hard | Sofia Costoulas | Yaroslava Bartashevich Zhanel Rustemova | 6–0, 6–3 |
| 1 | Székesfehérvár Open, Hungary | W75 | 10 March 2025 | Clay | 1R | Ekaterina Makarova | No. 233 | 7–6(3), 6–3 | No. 722 |
| 2 | Serbian Tennis Tour 2, Serbia | W75 | 23 September 2024 | Clay | 2R | Cristina Dinu | No. 258 | 6–7(5), 6–3, 6–2 | No. 963 |
| 3 | Kuchyně Gorenje Prague Open, Czech Republic | W60 | 28 August 2023 | Clay | 2R | Sonay Kartal | No. 259 | 6–2, 7–5 | No. 782 |
| 4 | Bellinzona Ladies Open, Switzerland | W75 | 7 April 2025 | Clay | 1R | Tina Smith | No. 325 | 6–4, 6–4 | No. 608 |
| 5 | ITF Alkmaar, Netherlands | W15 | 26 June 2023 | Clay | F | Caijsa Hennemann | No. 361 | 6–1, 7–5 | No. 1,156 |
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