Sofya Yevgenyevna Lansere (ˈsofʲɪ̯ə ɫən⁽ʲ⁾sʲɪˈrɛ; born 29 September 2000) is a Russian tennis player. She has a career-high singles ranking of world No. 200, achieved on 4 December 2023. On 14 August 2023, she peaked at No. 119 in the WTA rankings.
She made her first main-draw singles appearance at the 2023 Palermo Ladies Open, where she made it through to the second round thanks to the retirement due to injury of Olga Danilović, before losing to third seed Mayar Sherif.
Having qualified for the 2023 Hong Kong Open, Lansere defeated wildcard entrant Cody Wong, but lost in round two against third seed Elise Mertens.
| {class=wikitable style=font-size:85% !Legend |
| W60 tournaments (0–1) |
| W25 tournaments (3–1) |
| W15 tournaments (1–1) |
| Hard (4–3) |
| Clay (0–0) |
| Loss | 0–1 | Feb 2018 | Trnava Women's Indoor, Slovakia | W15 | Hard (i) | Anastasia Dețiuc | 7–5, 0–6, 3–6 |
| Win | 1–1 | May 2019 | Khimki Cup, Russia | W25 | Hard (i) | Dea Herdželaš | 6–1, 4–6, 6–3 |
| Win | 2–1 | Feb 2020 | Trnava Women's Indoor, Slovakia | W25 | Hard (i) | Lina Gjorcheska | 6–2, 6–3 |
| Loss | 2–2 | Feb 2020 | Trnava Women's Indoor 2, Slovakia | W25 | Hard (i) | Jaqueline Cristian | 1–6, 2–4 ret. |
| Win | 3–2 | Sep 2023 | ITF Kyoto, Japan | W25 | Hard (i) | Hiroko Kuwata | 6–0, 6–1 |
| Loss | 3–3 | Nov 2023 | Slovak Open, Slovakia | W60 | Hard (i) | Ella Seidel | 4–6, 6–7(4) |
| Win | 4–3 | Jun 2025 | ITF Ma'anshan, China | W15 | Hard (i) | Tiana Tian Deng | 6–1, 6–0 |
| {class=wikitable style=font-size:85% !Legend |
| W60 tournaments (5–4) |
| W40 tournaments (1–0) |
| W25/35 tournaments (7–6) |
| W15 tournaments (1–2) |
| Hard (11–7) |
| Clay (3–5) |
| Loss | 0–1 | Aug 2017 | ITF Moscow, Russia | W15 | Clay | Aleksandra Kuznetsova | Ilona Kremen Iryna Shymanovich | 2–6, 0–6 |
| Loss | 0–2 | Jun 2018 | Fergana Challenger, Uzbekistan | W25 | Hard | Kamilla Rakhimova | Anastasia Frolova Ekaterina Yashina | 1–6, 6–7(4) |
| Win | 1–2 | Mar 2019 | ITF Moscow, Russia | W25 | Hard (i) | Elena Rybakina | Ganna Poznikhirenko Vivian Heisen | 1–6, 6–3, 10–4 |
| Loss | 1–3 | May 2019 | ITF Khimki, Russia | W25 | Hard (i) | Anastasia Frolova | Freya Christie Ekaterina Yashina | 3–6, 3–6 |
| Loss | 1–4 | May 2019 | Open Saint-Gaudens, France | W60 | Clay | Anna Kalinskaya | Martina di Giuseppe Giulia Gatto-Monticone | 1–6, 1–6 |
| Win | 2–4 | Sep 2019 | Meitar Open, Israel | W60 | Hard | Kamilla Rakhimova | Anastasia Gasanova Valeriya Strakhova | 4–6, 6–4, 10–3 |
| Win | 3–4 | Feb 2020 | ITF Moscow, Russia | W25 | Hard (i) | Kamilla Rakhimova | Natela Dzalamidze Valentini Grammatikopoulou | 6–1, 3–6, 10–6 |
| Loss | 3–5 | Apr 2021 | ITF Oeiras, Portugal | W25 | Clay | Natela Dzalamidze | Suzan Lamens Marina Melnikova | 3–6, 1–6 |
| Loss | 3–6 | Apr 2022 | Open de Seine-et-Marne, France | W60 | Hard (i) | Oksana Selekhmeteva | Isabelle Haverlag Justina Mikulskytė | 4–6, 2–6 |
| Win | 4–6 | Apr 2022 | ITF Calvi, France | W25+H | Hard | Valeriya Strakhova | Estelle Cascino Jessika Ponchet | 6–4, 7–6(5) |
| Loss | 4–7 | Apr 2022 | ITF Monastir, Tunisia | W25 | Hard | Polina Kudermetova | Estelle Cascino Jessika Ponchet | 0–6, 6–4, 7–10 |
| Loss | 4–8 | Jun 2022 | ITF Tbilisi, Georgia | W25 | Hard | Polina Kudermetova | Angelina Gabueva Anastasia Zakharova | 4–6, 3–6 |
| Win | 5–8 | Jun 2022 | ITF Ra'anana, Israel | W25 | Hard | Maria Timofeeva | Elena-Teodora Cadar Fanny Stollár | 6–3, 7–6(5) |
| Loss | 5–9 | Sep 2022 | ITF Almaty, Kazakhstan | W25 | Clay | Amina Anshba | Ekaterina Yashina Zhibek Kulambayeva | 6–7(4), 7–5, 8–10 |
| Win | 6–9 | Oct 2022 | Trnava Women's Indoor, Slovakia | W60 | Hard (i) | Rebecca Šramková | Lee Pei-chi Wu Fang-hsien | 4–6, 6–2, 11–9 |
| Win | 7–9 | Jan 2023 | Open Andrézieux-Bouthéon, France | W60 | Hard (i) | Oksana Selekhmeteva | Conny Perrin Iryna Shymanovich | 6–3, 6–0 |
| Loss | 7–10 | Feb 2023 | Open de l'Isère, France | W60 | Hard (i) | Maria Timofeeva | Freya Christie Ali Collins | 4–6, 3–6 |
| Win | 8–10 | Mar 2023 | Branik Maribor Open, Slovenia | W40 | Hard (i) | Anastasia Tikhonova | Irina Bara Andreea Mitu | 6–3, 6–2 |
| Win | 9–10 | May 2023 | Open Saint-Gaudens, France | W60 | Clay | Anna Sisková | María Herazo González Adriana Reami | 6–0, 3–6, 10–6 |
| Loss | 9–11 | May 2023 | Grado Tennis Cup, Italy | W60 | Clay | Anna Sisková | Emily Appleton Julia Lohoff | 6–3, 4–6, 9–11 |
| Win | 10–11 | Jun 2023 | ITF Kuršumlijska Banja, Serbia | W25 | Clay | Valentini Grammatikopoulou | Jazmin Ortenzi Ekaterina Reyngold | 6–3, 6–2 |
| Win | 11–11 | Jul 2023 | Open de Montpellier, France | W60 | Clay | Amina Anshba | Julia Lohoff Andreea Mitu | 6–3, 6–4 |
| Win | 12–11 | Oct 2024 | ITF Huzhou, China | W35 | Hard | Ekaterina Shalimova | Xiao Zhenghua Ye Qiuyu | 6–2, 6–3 |
| Win | 13–11 | Oct 2024 | ITF Qiandaohu, China | W35 | Hard | Ekaterina Shalimova | Xun Fangying Zhang Ying | 4–6, 6–4, 10–5 |
| Win | 14–11 | May 2025 | ITF Maanshan, China | W15 | Hard (i) | Sandugash Kenzhibayeva | Guo Meiqi Peangtarn Plipuech | 6–3, 3–6, 10–8 |
| Loss | 14–12 | Jun 2025 | ITF Maanshan, China | W15 | Hard (i) | Sandugash Kenzhibayeva | Peangtarn Plipuech Wang Jiaqi | 7–6(6), 4–6, 4–10 |
|
|