The Pouto Peninsula is a landform on the northern Kaipara Harbour in Northland, New Zealand. The Peninsula runs in the north west to south east direction and is approximately 55 km long. The width varies from about 5.4 km to about 14 km, with the widest part of the peninsula near its southern end. The Tasman Sea is to the west, and the Kaipara Harbour is to the south. The Wairoa River and Kaipara Harbour are to the east.