thumb|right|280px|Lower and Upper Hutt cities are marked as 2 and 3 in this satellite image of the Wellington area (composite landsat-7 image)
The Hutt Valley (or 'The Hutt') is the large area of fairly flat land in the Hutt River valley in the Wellington Region of New Zealand. Like the river that flows through it, it takes its name from Sir William Hutt, a director of the New Zealand Company in early colonial New Zealand.
The river flows roughly along the course of an active geologic fault, which continues to the south to become the main instrument responsible for the uplift of the South Island's Southern Alps. For this reason, the land rises abruptly to the west of the river; to the east two floodplains have developed. The higher of these is between from the mouth of the river. Beyond this, the river is briefly confined by a steep-sided gorge near Taitā, before the land opens up into a long triangular plain close to the outflow into Wellington Harbour.
The Waiwhetu Aquifer is formed from water seeping underground from the Hutt River near Taitā. It flows underground down the Hutt Valley and out under Wellington Harbour.
Human settlement
Some early Māori nations (iwi) of the region were Ngāi Tara, Muaūpoko, Rangitāne, Ngāti Apa ki te Rā Tō and Ngāti Ira. These iwi descended from the sons of Whātonga, Taraika and Tautoki-ihu-nui-a-Whātonga, who migrated through the lower North Island with some descendants settling in the Hutt Valley. The name Heretaunga is often applied to the Hutt Valley from the name of the 'house of Whātonga at Nukutaurua village (pā)'.