Steinar Dagur Adolfsson
 Steinar Dagur Adolfsson (born 25 January 1970) is a retired Icelandic football defender.In his early career he played for Valur KR Reykjavik and ÍA Akranes. He joined Kongsvinger IL in 1999 and played semi-regularly the first two seasons. He left after the 2001 season.He has been capped for Iceland.