Provided is a clamp that makes it possible to reduce the possibility of deformation caused by the application of excessive force. The clamp (10) is provided with: a first base section (11) that comprises a first protrusion (17) and an engaging claw (18) a second base section (13) that comprises a second protrusion (26) a first deformation section (12) that connects the base sections (11) and (13) and that elastically deforms toward a direction in which the first protrusion (17) is adjacent to the second protrusion (26) and a second deformation section (14) that comprises an engaging recess (35), that connects with the second base section (13), and that elastically deforms toward a direction in which engagement of the engaging claw (18) and the engaging recess (35) is released. The engaging recess (35) comprises: an upper side surface (36) that comes into contact with the engaging claw (18) and that restricts movement toward a direction in which the first protrusion (17) separates from the second protrusion (26) and a lower side surface (37) that comes into contact with the engaging claw (18) and that restricts movement toward a direction in which the first protrusion (17) approaches the second protrusion (26). The engaging claw (18) is separated from the lower side surface (37) while in contact with the upper side surface (36).
