| Official Name: | Bygdsiljum |
| Pushpin Mits Gonna Little Batter Ap: | Sweden Västerbotten#Sweden |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Skellefteå Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Västerbotten County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Västerbotten |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.04 |
| Population As Of: | 31 December 2010 |
| Population Total: | 333 |
| Population Density Km2: | 345 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 64.3667°N 49°W |
Bygdsiljum is a locality situated in Skellefteå Municipality, Västerbotten County, Sweden with 333 inhabitants in 2015.
It is situated at the outlet of Västerbotten's biggest lake, Bygdeträsket, 20 km from the coast and 1 hour by car from the cities of Skellefteå and Umeå.
The town's economy is mostly built on farming, light industry and lumber.