Mosfellsbær (, colloquially Mosó) is a town in south-west Iceland, 12 km east of the country's capital, Reykjavík. The coat of arms of the municipality is a tightly-knotted triquetra, a symbol often used in Celtic knotwork and strongly associated with the Celtic nations (which featured prominently in Celtic spirituality as well as Ancient Celtic religion in the past and, to some extent, to this day). The coat of arms might denote the Gaelic heritage of Mosfellsbær as Icelanders are also descended from Gaelic-speaking settlers who voyaged or were brought by the Norsemen in Iceland during the country's settlement in the Viking Age.

Notable People

Twin towns – sister cities

Mosfellsbær is twinned with: