Musket Wars refers to battles in the early 1800s when there was deadly inter-tribal conflict between various groups of Maori, primarily on the North Island in New Zealand. The conflict was a direct result of the introduction of the musket into the Maori culture. Northern tribes, such as the rival Ngapuhi and Ngati Whatua, were the first to obtain the weapon and inflicted heavy causualties upon each other and on neighboring tribes, some of whom had never seen the musket before.

In time, all the tribes traded to obtain muskets and the conflict ultimately reached an uneasy stalemate after decimating the population of some tribes and drastically shifting the boundaries between areas controlled by various tribes.