| Mie Ø. Nielsen | |
| Fullname: | Mie Østergaard Nielsen |
| Strokes: | Backstroke, Freestyle |
| Club: | Aalborg Swimming Club |
| Coach: | Eyleifur Jóhannesson |
| Birth Date: | 25 September 1996 |
| Birth Place: | Aalborg, Denmark |
| Height: | 1.84 m |
| Weight: | 67 kg |
Mie Østergaard Nielsen (born 25 September 1996) is a Danish former competitive swimmer who holds the Danish record in several backstroke events.[1]
Nielsen won her first international senior medals at the 2011 European Short Course Swimming Championships, where she won four medals and was named newcomer of the championship.[2]
She made her Olympics debut at the 2012 games where she was taking part in the 100 and 200 m backstroke and the 4×100 m relays in freestyle and medley.
Nielsen missed the 2013 World Aquatics Championships with a knee injury, but won the bronze medal in the 100 m backstroke at the 2015 World Aquatics Championships in Kazan, Russia.[3]
At the 2016 European Aquatics Championships in London, she successfully defended her title in the 100 m backstroke, breaking the Championships record and national record with a time of 58.73.
At the 2016 Summer Olympics in Rio de Janeiro, she won a bronze medal as a part of the 4 × 100 m medley relay alongside Rikke Møller Pedersen, Jeanette Ottesen and Pernille Blume. Here they also broke the European record with a time of 3:55.01.
In October 2020 Nielsen announced her retirement from competitive swimming, citing continued shoulder problems and the uncertainty regarding the proponed 2020 Summer Olympics.[4]
She is the daughter of Benny Nielsen, who won silver in the 200 m butterfly at the 1988 Summer Olympics and Lone Jensen, who participated in the 1978 World Aquatics Championships.