Reykjanesbær (Icelandic pronunciation: ​[ˈreiːcaˌnɛsˌpaiːr̥]) is a municipality on the Southern Peninsula (Suðurnes) in Iceland, though the name is also used by locals to refer to the suburban region of Keflavík and Njarðvík which have grown together over the years. The municipality is made up of the towns Keflavík, Njarðvík and the village of Hafnir. The municipality was created in 1994 when the inhabitants of the three towns voted to merge them into one. Reykjanesbær is the fourth largest municipality in Iceland, with 19,676 citizens (2021).