Ioana Ducu (born 18 April 1996) is a former Romanian tennis player. In her career, she won one doubles title on the ITF Women's Circuit and reached best WTA rankings of 830 in singles and 736 in doubles.

In June 2014, together with fellow Romanian Ioana Loredana Roșca, Ducu won the girls' doubles tournament at the French Open, defeating CiCi Bellis and Markéta Vondroušová in the final, in three sets.^[1]

In 2017, it was announced that she ended her tennis career for pursuit of a career in medicine. She played her last match on the ITF Circuit in September 2014 in Sharm El Sheikh, Egypt.^[2]

Result	Date	Tournament	Surface	Opponent	Score
Loss	Feb 2013	ITF Antalya, Turkey	Clay	Jovana Jakšić	2–6, 5–7

Result	No.	Date	Tournament	Surface	Partner	Opponents	Score
Loss	1.	18 February 2013	ITF Antalya, Turkey	Clay	Cristina Ene	Ágnes Bukta Vivien Juhászová	1–6, 6–2, [6–10]
Loss	2.	12 September 2014	ITF Bucharest, Romania	Clay	Julia Helbet	Raluca Ciufrila Andreea Ghițescu	7–6(2), 1–6, [7–10]
Win	1.	22 September 2014	ITF Sharm El Sheikh, Egypt	Hard	Eden Silva	Yui Saikai Natsumi Yokota	6–2, 6–4
Loss	3.	29 September 2014	ITF Sharm El Sheikh, Egypt	Hard	Eden Silva	Harriet Dart Melis Sezer	5–7, 1–6

Result	Year	Championship	Surface	Partner	Opponents	Score
Win	2014	French Open	Clay	Ioana Loredana Roșca	CiCi Bellis Markéta Vondroušová	6–1, 5–7, [11–9]

• Ioana Ducu at the Women's Tennis Association
• Ioana Ducu at the International Tennis Federation