[2] She competed in the women's 100 metre butterfly event at the 2016 Summer Olympics.

[3] She finished 17th in the heats with a time of 58.27 seconds which was a new national record.

[4] At the 2020 Summer Olympics she finished 9th, achieving a new national record with a time of 57.25 seconds.

Also, she won the gold of 2020 European Aquatics Championships sharing this title with Marie Wattel.

[5] On 24 December 2019, Ntountounaki was awarded by the mayor of Chania, Panagiotis Simandirakis, along with Stelios Michailakis.