斧，又称斧头、戚，是一种武器或者伐木工具。是由一根木棍把手接着一块梯形刀片所构成。

斧是利用杠杆原理和冲量等于动量的改变量原理来运作的。

An axe (in American English also spelled ax) is an implement that has been used for millennia to shape, split and cut wood; to harvest timber; as a weapon; and as a ceremonial or heraldic symbol. The axe has many forms and specialised uses but generally consists of an axe head with a handle, or helve.