Disclosed is a push button including: a module that has a fixed contact part which is able to contact and separate from a movable contact part; an elastically deformable dynamic contact member that is supported in a cantilever state with a base part fixed to the module, and that has the movable contact part electrically contactable with the fixed contact part; and an operation receiving member that makes the movable contact part contact the fixed contact part by having one end acting on an acting portion. The movable contact part is arranged out of (i) a line connecting the acting portion and the base part and (ii) an extended line thereof, the dynamic contact member has a first movable part and a second movable part, the acting portion is arranged in the first movable part, and the movable contact part is arranged in the second movable part.