Taylah Preston (born 27 October 2005) is an Australian professional tennis player. She has a career-high WTA rankings singles ranking of No. 134, achieved on 18 March 2024, and a best doubles ranking of No. 175, achieved on 28 July 2025. She has won a WTA Challenger title in doubles.
As a junior, Preston reached a career-high combined ranking of No. 10.
Preston made her WTA Tour main-draw debut in doubles at the Melbourne Summer Set 2, where she received a wildcard partnering Alexandra Osborne. She also received a wildcard into the qualifying draw for the Melbourne Summer Set 1, where she defeated former French Open finalist, Sara Errani, in the first round, before falling in the final round.
She made her WTA Tour main-draw debut in singles at the 2022 Rosmalen Grass Court Championships as a qualifier.
In February, she reached her first WTA 125 final at the Puerto Vallarta in Mexico, losing in three sets to McCartney Kessler. Later that month at the San Diego Open, having been given a wildcard entry, she defeated world No. 42, Magdalena Fręch, to win her first Tour-level match and also her first against a player ranked in the WTA top 50. She lost her next match to sixth seed Marta Kostyuk.
Preston was given a wildcard entry to make her maiden appearance at the US Open in August but lost in the first round to 25th seed Anastasia Pavlyuchenkova.
Having been given a wildcard entry into the main-draw at the Australian Open, Preston defeated Zhang Shuai for her first win at a major, before losing to 13th seed Linda Nosková in the second round.
| Loss | 0–1 | Puerto Vallarta Open, Mexico | Hard | McCartney Kessler | 7–5, 3–6, 0–6 |
| Win | 1–0 | Cancún Tennis Open, Mexico | Hard | Maya Joint | Aliona Bolsova Yvonne Cavallé Reimers | 6–4, 6–3 |
| {class="wikitable" style=font-size:85% !Legend |
| W60/75 tournaments (1–1) |
| W25/35 tournaments (6–2) |
| Hard (7–3) |
| Loss | 0–1 | May 2023 | ITF Nottingham, UK | W25 | Hard | Harriet Dart | 0–6, 2–6 |
| Win | 1–1 | May 2023 | ITF Monastir, Tunisia | W25 | Hard | Gabriela Knutson | 3-6, 7–6(5), 6–3 |
| Win | 2–1 | Sep 2023 | ITF Perth, Australia | W25 | Hard | Talia Gibson | 7–5, 6–1 |
| Win | 3–1 | Oct 2023 | ITF Cairns, Australia | W25 | Hard | Yuki Naito | 6–4, 6–4 |
| Win | 4–1 | Nov 2023 | Brisbane QTC International, Australia | W60 | Hard | Darya Astakhova | 6–3, 6–4 |
| Loss | 4–2 | Oct 2024 | NSW Open Challenger, Australia | W75 | Hard | Emerson Jones | 4–6, 6–7(3) |
| Loss | 4–3 | Sep 2025 | ITF Wagga Wagga, Australia | W35 | Hard | Katie Swan | 1–6, 2–6 |
| Win | 5–3 | Sep 2025 | ITF Wagga Wagga, Australia | W35 | Hard | Katie Swan | 6–4, 7–6(5) |
| Win | 6–3 | Sep 2025 | ITF Darwin, Australia | W35 | Hard | Shiho Akita | 7–6(3), 6–3 |
| Win | 7–3 | Oct 2025 | Brisbane QTC International, Australia | W35 | Hard | Natsumi Kawaguchi | 6–2, 6–4 |
| {class="wikitable" style=font-size:85% !Legend |
| W75 tournaments (1–2) |
| W25 tournaments (1–2) |
| Hard (2–4) |
| Loss | 0–1 | Oct 2022 | ITF Cairns, Australia | W25 | Hard | Alana Parnaby | Talia Gibson Petra Hule | 1–6, 4–6 |
| Loss | 0–2 | Sep 2023 | ITF Perth, Australia | W25 | Hard | Talia Gibson | Destanee Aiava Maddison Inglis | 3–6, 6–7(3) |
| Win | 1–2 | Oct 2023 | ITF Cairns, Australia | W25 | Hard | Destanee Aiava | Roisin Gilheany Alicia Smith | 7–6(5), 7–5 |
| Loss | 1–3 | Oct 2024 | Playford International, Australia | W75 | Hard | Lizette Cabrera | Alexandra Bozovic Petra Hule | 4–6, 3–6 |
| Win | 2–3 | Oct 2024 | NSW Open Challenger, Australia | W75 | Hard | Lizette Cabrera | Destanee Aiava Maddison Inglis | 6–1, 3–6, 10–8 |
| Loss | 2–4 | Jan 2025 | Brisbane QTC International, Australia | W75 | Hard | Lizette Cabrera | Petra Hule Elena Micic | 6–2, 2–6, 6–10 |
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