A reciprocating tool includes a housing, a first tubular member, a slider, a second tubular member and a lock member. The first tubular member is pivotable around a first axis and has a single first protrusion protruding radially inward. The second tubular member is disposed in the first tubular member, is coupled to a first end portion of the slider to be pivotable around a second axis, and has a single second protrusion protruding radially outward. The second tubular member has a protruding portion configured to allow the lock member to move from a lock position to an unlock position. The single first protrusion is configured to engage with the single second protrusion and cause the second tubular member to pivot when the first tubular member pivots. The single second protrusion is provided on a portion of the second tubular member other than the protruding portion.