| Birth Date: | 15 October 1909 |
| Birth Place: | Sala, Sweden |
| Death Place: | Mälaren, Sweden |
| Height: | 1.76m (05.77feet) |
| Weight: | 60kg (130lb) |
| Sport: | Athletics |
| Event: | 1500 m |
| Club: | IK Mode, Stockholm |
| Pb: | 800 m – 1:50.4 (1934) 1500 m – 3:50.8 (1934) |
| Show-Medals: | yes |
Eric Oscar Sigvard Ny (15 October 1909 – 2 September 1945) was a Swedish middle-distance runner. He competed in the 1500 m event at the 1932 and 1936 Summer Olympics and finished in fifth and eleventh place, respectively. He placed fourth in the 800 m at the 1934 European Championships. Ny died in a sailing accident, aged 35.