The Hutt Valley campaign was an armed conflict in the lower North Island of New Zealand between indigenous Māori and British settlers and military forces in 1846. The campaign was among the earliest of the 19th century New Zealand Wars that were fought over issues of land and sovereignty. It was preceded by the Wairau affray and followed by the Wanganui campaign and was triggered by much the same pressures—the careless land purchasing practices of the New Zealand Company, armed government support for settler land claims, and complex intertribal tensions between local Māori. The three conflicts also shared many of the same combatants.

Māori are the indigenous Polynesian people of mainland New Zealand. Māori originated with settlers from East Polynesia, who arrived in New Zealand in several waves of canoe voyages between roughly 1320 and 1350. Over several centuries in isolation, these settlers developed their own distinctive culture, whose language, mythology, crafts, and performing arts evolved independently from those of other eastern Polynesian cultures. Some early Māori moved to the Chatham Islands, where their descendants became New Zealand's other indigenous Polynesian ethnic group, the Moriori.