Jeong Su-nam (Korean: 정수남; born 6 June 1996) is a South Korean female tennis player.

She has career-high WTA rankings of 357 in singles, achieved on 29 May 2017, and 829 in doubles, achieved on 30 December 2019. In her career, she has won seven singles titles on the ITF Circuit.

Jeong made her WTA Tour main-draw debut at the 2017 Korea Open, after receiving a wildcard into the doubles tournament alongside Park Sang-hee.

Playing for the South Korea Fed Cup team, she has a win-loss record of 3–3.

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	May 2016	Incheon Open, South Korea	25,000	Hard	Han Na-lae	6–4, 4–6, 6–4
Win	2–0	Jul 2016	ITF Gimcheon, South Korea	10,000	Hard	Hanna Chang	4–6, 6–2, 6–3
Win	3–0	Jun 2017	ITF Sangju, South Korea	15,000	Hard	Choi Ji-hee	6–2, 6–3
Win	4–0	Jun 2017	ITF Gimcheon, South Korea	15,000	Hard	Choi Ji-hee	6–3, 3–6, 6–2
Win	5–0	Jun 2017	ITF Gimcheon, South Korea	15,000	Hard	Han Sung-hee	6–3, 6–1
Win	6–0	Sep 2018	ITF Yeongwol, South Korea	15,000	Hard	Lee So-ra	6–2, 6–1
Loss	6–1	Jun 2019	ITF Gimcheon, South Korea	15,000	Hard	Shiori Fukuda	2–6, 6–4, 5–7
Loss	6–2	Dec 2019	ITF Navi Mumbai, India	25,000	Hard	Barbara Haas	6–4, 2–6, 6–7(2–7)
Win	7–2	Sep 2022	ITF Yeongwol, South Korea	15,000	Hard	Clara Vlasselaer	6–4, 6–1

Result	No.	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Sep 2019	ITF Yeongwol, South Korea	W15	Hard	Kim Na-ri	Rina Saigo Yukina Saigo	6–4, 6–3
Loss	1–1	Sep 2024	ITF Yeongwol, South Korea	W15	Hard	Ye Qiuyu	Lee Ya-hsin Lin Fang-an	4–6, 7–6(6), [6–10]

• Jeong Su-nam at the Women's Tennis Association
• Jeong Su-nam at the International Tennis Federation
• Jeong Su-nam at the Billie Jean King Cup (archived)
• Jeong Su-nam at ESPN.com