Gåddevaggi is a village in Alta Municipality, in Finnmark, Norway. Gåddevaggi lies at 1 m above sea level, in the Middavarri/Gabmaskaidi mountains. The nearest city is Tromsø, 156 km to the west. Among the landmarks around are Talvik Church (7.8 km), Kåfjord Church (19.6 km) and Langfjord Church (17.5 km). Among the natural features are Ákšoalggečohkka (14.3 km).

Also written Goddevik.