| Birth Date: | 9 November 1888 |
| Birth Place: | Stockholm, Sweden |
| Death Date: | 8 April 1950 (aged 61) |
| Death Place: | Stockholm, Sweden |
| Height: | 1.74m (05.71feet) |
| Weight: | 64kg (141lb) |
| Sport: | Athletics |
| Event: | 400–5000 m |
| Club: | IK Göta |
| Pb: | 400 m – 50.0 (1913) 800 m – 1:55.7 (1910) 1500 m – 3:57.6 (1912) 3000 m – 8:46.2 (1912) 5000 m – 15:48.0 (1909) |
| Show-Medals: | yes |
Ernst Theodor Wide (9 November 1888 – 8 April 1950) was a Swedish runner.[1] He competed at the 1912 Summer Olympics held in Stockholm in the 1500 m and 3000 m events, and finished in fifth and fourth place, respectively. His fourth finish earned him a silver medal with the Swedish team.