It is an object of the invention to provide an improved impact tool in which a biasing member is not affected by dust.An impact tool according to the invention has a driving mechanism 120 for driving a tool bit 119, housing parts 105, 106 that form a housing space 105a in which at least part of the driving mechanism 120 is disposed, and a switching member 160 for switching a drive mode of the impact tool. The switching member 160 has an operating member 161 that is operated by a user for mode switching, and a biasing member 175 that is disposed between the operating member 161 and the housing part 106 and biases the operating member 161 so as to hold the operating member 161 in a selected position. The biasing member 175 is disposed in the housing space 105a.