Lággu is a hamlet in Gamvik Municipality, in Finnmark, Norway. Lággu lies at 2 m above sea level, in the Nordkinnhalvøya mountains, on the Nordkinnhalvøya peninsula. It has 2 inhabitants. The nearest city is Tromsø, 346 km to the west. Among the landmarks around are Lebesby Church (24 km) and Tana Church (33 km).