Älvsborg

Älvsborg or Elfsborg may refer to:

Fortresses

 * Old Älvsborg, a ruined mediaeval castle on the Göta River in Gothenburg, Sweden
 * New Älvsborg, a sea fort on the island of Kyrkogårdsholmen in Gothenburg, Sweden
 * Älvsborg Fortress, a 19th-century fortress at the mouth of the Göta River
 * Fort Nya Elfsborg, a 17th-century colonial fort on the Delaware River in modern New Jersey

Other military uses

 * HSWMS Älvsborg, a minelayer of the Swedish Navy
 * Älvsborg Regiment, a former infantry regiment based in Borås
 * Älvsborg Coastal Artillery Regiment, a former regiment of the Swedish Coastal Artillery
 * Älvsborg Brigade, a former infantry brigade in Sweden's Western Military District

Sports

 * Älvsborgs FF, a football club in Gothenburg
 * IF Elfsborg, a professional football club based in Borås
 * SK Elfsborg, a swimming club in Borås; see List of Swedish Swimming Championships champions (women)

Other uses

 * Älvsborg, Gothenburg, a borough of Gothenburg, Sweden
 * Älvsborg County, a former county in Sweden
 * Älvsborg Line, a railway line in Sweden