Keflavík is a town in the Reykjanes region in southwest Iceland. It is included in the municipality of Reykjanesbær whose population as of 2016 is 15,129. In 1995, Keflavík merged with nearby Njarðvík and Hafnir to form the municipality of Reykjanesbær. Keflavík International Airport, the country's largest airport is adjacent to the town.