To provide a wiper arm capable of connecting an arm piece and a connecting member to each other by restraining rattling between them to the minimum and reducing the number of manufacturing processes.

The arm piece 21 furnished on the wiper arm has a hook part 22 formed bent in a U letter shape so that a head end of a metal made plate material is directed toward the base end side of the plate material. This arm piece 21 is connected to a wiper blade as the hook part 22 is engaged with a connecting part provided to connect side walls to each other between a pair of the side walls facing against each other of the connecting member furnished on the wiper blade. Additionally, a bent part 22c which is a bent portion on the hook part 22 of the arm piece 21 is formed narrower in width than flat plate type flat plate parts 22a, 22b.

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