Oana Corina Constantin (born 12 November 1991 in Constanța, Romania) is a retired senior Romanian aerobic gymnast.

[3] In 2016, Constantin was a member of the Romanian Gymnastics and Modern Dance troupe, AEROS which toured in Italy and Switzerland from February to March.

[4] Constantin's first major International event was at the 2011 Aerobic Gymnastics European Championships where she won the gold medal in Individual Women with a 21.500.

Here, Romania also placed second in the group with a score of 20.794 by Constantin, Maria Luisa Pavel, Laura Cristache, Delia Lacataru, Anca Surdu, Andreea Bogati, all members of the AEROS troupe.

[6] The Romanian group of Maria Bianca Becze, Andreea Bogati, Constantin, Diana Cristina Deac and Anca Claudia Surdu qualified in third position, winning the silver medal with a 20.883.

At the 2014 Barovets World Cup, in Bulgaria, Constantin won gold in both Individual and trio competitions scoring a 21.350 and 20.700 respectively in each routine.

In Cancun at the 2014 World Championships Constantin was once again a favourite to win the gold medal along with Austria's Lubov Gazov and France's Aurelie Joly.

[8] After a very successful World Championships and two gold medals, a tired and injured Constantin decided to walk away from the sport and take and extended break.

[9] After a year long break, Constantin announced she was coming out of retirement with hopes to win the gold medal in Individual at the 2016 World Championships.

Constantin's 2016 season started off with the Cantanhede World Cup in Portugal where she won the gold medal in individual women with a 21.900, placing ahead of teammate Bianca Gorgovan and Hungary's Dora Hegyi who scored 21.425 and 21.150 respectively.