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.

She played her last match on the ITF Circuit in September 2014 in Sharm El Sheikh, Egypt.

This biographical article relating to Romanian tennis is a stub.