| Strokes: | Freestyle |
| Club: | Malmö SS |
| Birth Date: | 1 September 1897 |
| Birth Place: | Stockholm, Sweden |
| Death Date: | 23 November 1974 (aged 77) |
| Death Place: | Malmö, Sweden |
| Show-Medals: | yes |
Emmy Gunilla "Emy" Machnow (1 September 1897 – 23 November 1974) was a Swedish freestyle swimmer.[1] She won a bronze medal in 4 × 100 m freestyle relay at the 1920 Summer Olympics in Antwerp along with Aina Berg, Carin Nilsson and Jane Gylling.