Lier, Norway
| Lier Municipality Lier kommune | |
|---|---|
| City Hall in Lierbyen | |
| Buskerud within Norway | |
| Lier within Buskerud | |
| Coordinates: 59°47′38″N 10°15′58″E / 59.7937863°N 10.2660000°E | |
| Country | Norway | 
| County | Buskerud | 
| Administrative centre | Lierbyen | 
| Government | |
| • Mayor (2015) | Gunn Cecilie Ringdal (H) | 
| Area | |
|  • Total | 301 km2 (116 sq mi) | 
| • Land | 281 km2 (108 sq mi) | 
| • Rank | #277 in Norway | 
| Population  (24971) | |
|  • Total | 21,594 | 
| • Rank | #40 in Norway | 
| • Density | 77/km2 (200/sq mi) | 
| • Change (10 years) | +9.8% | 
| Demonym | Liung | 
| Official language | |
| • Norwegian form | Bokmål | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| ISO 3166 code | NO-3312 | 
| Website | Official website | 
Lier is a municipality in Buskerud county, Norway. The administrative centre of the municipality is the village of Lierbyen. The municipality of Lier was established on 1 January 1838 (see formannskapsdistrikt). The area Åssiden was transferred from Lier to the neighboring municipality of Drammen on 1 July 1951.
Norway's longest indoor shopping center, Liertoppen, is located in Lierskogen. The newspaper Lierposten is published in Lier.