Park Ui-sung (Korean: 박의성; born 27 September 2000) is a South Korean tennis player. He has a career-high ranking of No. 635 achieved on 12 September 2022.
Park has a career high ITF junior combined ranking of No. 3 achieved on 1 January 2018.
Challenger and World Tennis Tour Finals
Singles: 3 (2-1)
| Legend (singles) | | ATP Challenger Tour (0-0) | | ITF World Tennis Tour (2-1) | | | Titles by surface | | Hard (2–1) | | Clay (0-0) | | Grass (0–0) | | Carpet (0–0) | |
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | 0–1 | Mar 2022 | M15 Sharm El Sheikh, Egypt | World Tennis Tour | Hard | Saba Purtseladze | 4-6, 4-6 |
| Win | 1–1 | Sep 2022 | M15 Daegu, South Korea | World Tennis Tour | Hard | Kim Cheong-Eui | 6-3, 6-4 |
| Win | 2–1 | Jun 2023 | M25 Daegu, South Korea | World Tennis Tour | Hard | Lee Jea-moon | 6-3, 7-5 |
Doubles: 9 (3–6)
| Legend (singles) | | ATP Challenger Tour (0–0) | | ITF World Tennis Tour (3–6) | | | Titles by surface | | Hard (3–3) | | Clay (0–3) | | Grass (0–0) | | Carpet (0–0) | |
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Loss | 0–1 | Dec 2018 | Turkey F38, Antalya | Futures | Clay | Jeong Yeong-Seok | Wilson Leite Jeroen Vanneste | 2-6, 2-6 |
| Loss | 0–2 | May 2019 | M15 Cairo, Egypt | World Tennis Tour | Clay | Jeong Yeong-Seok | Alexander Igoshin Bernardo Saraiva | 6-4, 2-6, [4–10] |
| Loss | 0–3 | Jun 2019 | M15 Anseong, South Korea | World Tennis Tour | Clay | Jeong Yeong-Seok | Haru Inoue Ryota Tanuma | (W/O) |
| Win | 1–3 | Jun 2021 | M15 Monastir, Tunisia | World Tennis Tour | Hard | Siddhant Banthia | Jeremy Beale Ajeet Rai | (W/O) |
| Loss | 1–4 | Nov 2021 | M15 Heraklion, Greece | World Tennis Tour | Hard | Harry Wendelken | Filip Bergevi Kai Wehnelt | 6–7(8–10), 6–4, [7–10] |
| Loss | 1–5 | Mar 2022 | M15 Sharm El Sheikh, Egypt | World Tennis Tour | Hard | Sergey Fomin | Jiri Barnat Filip Duda | 3–6, 2–6 |
| Loss | 1–6 | Jun 2022 | M15 Tay Ninh, Vietnam | World Tennis Tour | Hard | Son Ji Hoon | Francis Casey Alcantara Lý Hoàng Nam | 3–6, 1–6 |
| Win | 2–6 | Nov 2022 | M25 Sharm El Sheikh, Egypt | World Tennis Tour | Hard | Jeong Yeong-Seok | Jacopo Berrettini Francesco Forti | 6–1, 7–6(11–9) |
| Win | 3–6 | Jun 2023 | M25 Daegu, South Korea | World Tennis Tour | Hard | Jeong Yeong-Seok | Cho Seung Woo Kim Dong Ju | 2–6, 6–0, [10–5] |
External links