A tomahawk is a type of single-handed axe used by the many Indigenous peoples and nations of North America. It traditionally resembles a hatchet with a straight shaft. In pre-colonial times the head was made of stone, bone, or antler, and European settlers later introduced heads of iron and steel. The term came into the English language in the 17th century as an adaptation of the Powhatan (Virginian Algonquian) word.

Tomahawks were general-purpose tools used by Native Americans and later the European colonials with whom they traded, and often employed as a hand-to-hand weapon. The metal tomahawk heads were originally based on a Royal Navy boarding axe (a lightweight hand axe designed to cut through boarding nets when boarding hostile ships) and used as a trade-item with Native Americans for food and other provisions.