Holder for cord-like member for working machine

Provided is a cord-like member holder (HD1) for holding a cord-like member inserted into a through-hole (18) provided in a partition wall (17) of an operator's cab of a working machine, being capable of achieving reliable holding of the cord-like member and reliable sealing in the through-hole, with a simple structure. The cord-like member holder (HD1) includes a grommet (20) made of elastic material to have an inner peripheral surface surrounding a cord-like member insertion hole (21) and a sealing surface (23a), and a fixture. The fixture includes a clamp section (30A, 30B) to clamp the grommet (20) to bring an inner peripheral surface of the grommet (20) into close contact with an outer peripheral surface of the cord-like member, and a fixing section (38) joined to the clamp section (30A, 30B) and fastened to the partition wall (17). The clamp section (30A, 30B) clamps the grommet (20) while relative displacement of the clamp section (30A, 30B) to the grommet (20) in a direction of approaching the partition wall (17) is restrained, and the fixing section (38) is fastened to the partition wall (17) to bring the sealing surface (23a) into close contact with the partition wall (17).