| Official Name: | Fagersta |
| Pushpin Map: | Sweden Västmanland#Sweden |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Fagersta Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Västmanland County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Västmanland |
| Established Title: | Founded |
| Established Date: | 1944 |
| Area Footnotes: | [1] |
| Area Total Km2: | 9.47 |
| Population As Of: | 31 December 2010 |
| Population Total: | 11,130 |
| Population Density Km2: | 1175 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 60.0042°N 15.7933°W |
| Elevation M: | 102 |
| Postal Code Type: | Postal code |
| Postal Code: | 737 xx |
| Area Code: | (+46) 223 |
Fagersta is a locality and the seat of Fagersta Municipality in Västmanland County, Sweden, with 11,130 inhabitants in 2010.
The city is located at the junction of two railways between Ludvika-Västerås and Avesta (Krylbo)-Örebro, in the heart of the historic Bergslagen region which is rich in copper and iron ore. The 60th parallel north passes through the town.
There has been mining activity in the Fagersta area since the 15th century but it was not organized until the 17th century and was not made a corporation until 1873, when Fagersta Bruks AB was founded.[2]
Fagersta was made a city in 1944 when the industrial hot spot of Fagersta merged with its service-oriented neighbour Västanfors. It is now the seat of Fagersta Municipality. The Fagersta airspace surveillance tower is a Second World War observation platform located to protect a nearby steel mill.
Today's industry is focused on hard metal tools (Seco Tools AB and Atlas Copco Secoroc AB) and stainless steel products (Fagersta Stainless AB and OUTOKUMPU Stainless Tubular Products AB).