| Official Name: | Sund |
| Pushpin Map: | Sweden Östergötland#Sweden |
| Pushpin Label Position: | left |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type2: | County |
| Subdivision Name2: | Östergötland |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Ydre |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 57.8628°N 15.2461°W |
Sund is a hamlet in Ydre Municipality in the South Swedish highlands. According to Svenskt ortnamnslexikon the name of the locality means "narrow"[1] referring to its position at the bottleneck position between Norra Sundsjön and Södra Sundsjön.
According to Leonhard Fredrik Rääf the church in Sund was built in the 12th century.[2] This church is described by Rääf as having stone arches, however it burned down in arson in 1631 and was rebuilt shortly afterward.[2]