| Official Name: | Kolsva |
| Pushpin Map: | Sweden Västmanland#Sweden |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Köping Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Västmanland County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Västmanland |
| Area Footnotes: | [1] |
| Area Total Km2: | 3.25 |
| Population As Of: | 31 December 2010 |
| Population Total: | 2,453 |
| Population Density Km2: | 754 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 59.6°N 65°W |
Kolsva (pronounced as /sv/)[2] is a locality situated in Köping Municipality, Västmanland County, Sweden with 2,453 inhabitants in 2010.
Composer Ivar Widner was born in Kolsva.