| Official Name: | Fjärås kyrkby |
| Pushpin Map: | Sweden Halland#Sweden |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Kungsbacka Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Halland County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Halland |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.44 |
| Population As Of: | 31 December 2010 |
| Population Total: | 2,321 |
| Population Density Km2: | 1614 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 57.4667°N 23°W |
Fjärås kyrkby is a locality in Kungsbacka Municipality, Halland County, Sweden, at the shore of lake Lygnern, with 2,321 inhabitants in 2010.