Mariia Sergeyevna Tkacheva (; born 17 December 2001) is a Russian tennis player. She has career-high rankings of world No. 266 singles and No. 305 in doubles, by the WTA, achieved in March and May 2025, respectively.

Tkacheva has won seven singles and 14 doubles tournaments on the ITF Women's World Tennis Tour.

Career Tkacheva won her biggest title to date at the 2022 President's Cup, where she partnered Anastasia Zolotareva to win in doubles.

She made her WTA Tour debut at the 2022 Chennai Open, losing to Varvara Gracheva in the first round.

ITF Circuit finals Singles: 14 (7 titles, 7 runner-ups) Legend W40/50 tournamentsW25/35 tournamentsW15 tournamentsFinals by surfaceHard (7–7) ResultW–LDateTournamentTierSurfaceOpponentScoreWin 1–0 Oct 2019ITF Antalya, Turkey15,000 Hard Romy Kölzer 6–2, 4–6, 6–1Loss 1–1 Nov 2019ITF Antalya, Turkey15,000 Hard Daria Kruzhkova 5–7, 7–5, 6–7(1)Loss 1–2 Dec 2019ITF Monastir, Tunisia15,000 Hard Carole Monnet 5–7, 2–6Loss 1–3 Mar 2022Nur-Sultan Challenger, KazakhstanW25 Hard (i) Anastasia Zakharova 3–6, 1–6Win 2–3 Mar 2022ITF Sharm El Sheikh, EgyptW15 Hard Cody Wong 3–6, 6–3, 6–3Win 3–3 Mar 2022ITF Sharm El Sheikh, EgyptW15 Hard Liu Fangzhou 6–4, 6–2Win 4–3 Jul 2022ITF Nur-Sultan, KazakhstanW25 Hard Moyuka Uchijima 7–6(2), 6–2Win 5–3 Nov 2023ITF Sharm El Sheikh, EgyptW15 Hard Jenny Dürst 6–1, 6–2Loss 5–4 Dec 2023ITF Sharm El Sheikh, EgyptW15 Hard Kira Pavlova 1–6, 6–7(3)Loss 5–5 Apr 2024ITF Monastir, TunisiaW15 Hard Patricija Paukštytė 6–7(4), 2–6Win 6–5 May 2024ITF Monastir, TunisiaW15 Hard Back Da-yeon 6–4, 6–3Loss 6–6 Aug 2024ITF Nakhon Si Thammarat, ThailandW35 Hard Hikaru Sato 6–4, 3–6, 2–6Loss 6–7 Nov 2024ITF Veracruz, Mexico W50 Hard Antonia Ružić 4–6, 6–7(3)Win 7–7 Nov 2024ITF Chihuahua, Mexico W50 Hard Daria Kudashova 6–1, 6–3

Doubles: 21 (15 titles, 6 runner-ups) LegendW60 tournamentsW50 tournamentsW25 tournamentsW15 tournamentsFinals by surfaceHard (11–4)Clay (4–2) ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin 1–0 Sep 2019ITF Shymkent, Kazakhstan15,000 Clay Veronika Pepelyaeva Elina Avanesyan Viktoryia Kanapatskaya 6–4, 6–4Win 2–0 Nov 2019ITF Antalya, Turkey15,000 Hard Victoria Mikhaylova Anastasiya Poplavska Nika Shytkouskaya 6–3, 7–5Win 3–0 Dec 2019ITF Monastir, Tunisia15,000 Hard Tamara Čurović Anna Hertel Marie Mettraux 6–3, 0–6, [10–8]Loss 3–1 Dec 2019ITF Monastir, Tunisia15,000 Hard Carole Monnet Yasmine Mansouri Marie Mettraux 4–6, 6–3, [6–10]Win 4–1 Jan 2022ITF Cairo, EgyptW15 Clay Anastasia Zolotareva Mariia Bergen Ani Vangelova 6–3, 1–6, [10–8]Win 5–1 Jan 2022ITF Cairo, EgyptW15 Clay Anastasia Zolotareva Sapfo Sakellaridi Youmi Zhuoma 6–1, 6–4Loss 5–2 Jan 2022ITF Cairo, EgyptW15 Clay Anastasia Zolotareva Oana Georgeta Simion Anna Ureke 3–6, 6–7(4)Win 6–2 Apr 2022ITF Cairo, EgyptW15 Clay Diletta Cherubini Émeline Dartron Lucie Nguyen Tan 3–6, 6–3, [10–8]Loss 6–3 May 2022ITF Cairo, EgyptW25 Clay Caijsa Hennemann Océane Babel Weronika Falkowska 4–6, 1–6Win 7–3 Jul 2022President's Cup, KazakhstanW60 Hard Anastasia Zolotareva Momoko Kobori Moyuka Uchijima 4–6, 6–1, [10–4]Win 8–3 Aug 2023ITF Monastir, TunisiaW15 Hard Ekaterina Shalimova Paula Cembranos Jenny Dürst 6–2, 3–6, [10–6]Loss 8–4 Dec 2023ITF Sharm El Sheikh, EgyptW15 Hard Daria Zelinskaya Karola Bejenaru Katarína Kužmová 3–6, 6–7(5)Win 9–4 Dec 2023ITF Sharm El Sheikh, EgyptW25 Hard Victoria Mikhaylova Maja Chwalińska Gina Feistel 6–4, 3–6, [13–11]Win 10–4 Apr 2024ITF Monastir, TunisiaW15 Hard Jang Gaeul Tessa Brockmann Ema Kovacevic 7–5, 6–3Win 11–4 Apr 2024ITF Monastir, TunisiaW15 Hard Milana Zhabrailova Eliessa Vanlangendonck Emily Welker 6–3, 6–1Win 12–4 Jun 2024ITF Monastir, TunisiaW15 Hard Katarína Kužmová Patricija Paukštytė Merna Refaat 6–1, 6–1Loss 12–5 Mar 2025ITF Gurugram, IndiaW35 Hard Polina Iatcenko Ekaterina Makarova Ekaterina Reyngold 6–2, 4–6, [7–10]Win 13–5 Mar 2025ITF Santo Domingo, Dominican RepublicW50 Hard Anastasia Tikhonova Ayana Akli Clervie Ngounoue 7–6(5), 6–7(2), [10–7]Win 14–5 Apr 2025ITF Sharm El Sheikh, EgyptW35 Hard Katarína Kužmová Aliona Falei Polina Iatcenko 6–4, 6–3Loss 14–6 Aug 2026ITF Astana, KazakhstanW15 Hard Daria Zelinskaya Kim Eun-chae Lee Ha-eum 1–6, 4–6Win 15–6 Sep 2026ITF Hurghada, EgyptW35 Hard Elina Nepliy María Herazo González Federica Sacco 6–3, 6–2

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