Alafoss is a historic Icelandic football club from the town of Mosfellsbær, currently playing in Iceland Division 4. The club takes its name from the nearby Alafoss waterfall, a landmark of the region, and plays its home games at a local sports field. With roots stretching back decades, Alafoss has a rich tradition in local football, having experienced spells in higher divisions during its history. The club's peak era likely saw them competing consistently in Division 3, with a team known for its physicality and direct style suited to Icelandic conditions. In recent years, the club has settled into Division 4, focusing on stability and youth development. The team culture is one of resilience and community pride, with a dedicated group of supporters who follow the team through the long, challenging seasons. Alafoss remains an integral part of the sporting fabric of Mosfellsbær.