| Greta Carlsson | |
| Fullname: | Greta Ingeborg Carlsson |
| Nationality: | Swedish |
| Strokes: | Freestyle |
| Club: | Eskilstuna Simsällskap |
| Birth Date: | 7 July 1898 |
| Birth Place: | Eskilstuna, Södermanland |
| Death Place: | Sundbyberg, Stockholm |
Greta Carlsson (later Nygren, July 7, 1898 - March 19, 1980) was a Swedish freestyle swimmer who competed in the 1912 Summer Olympics.[1]
In 1912 she was part of the Swedish team which finished fourth in the 4 x 100 metre freestyle relay event at the 1912 Summer Olympics. In the solo 100 metre freestyle competition she was eliminated in the first round.