To provide a printed wiring board causing no risk of board breakage even when an installation member is laid out toward an end portion of the board, and an insertion hole of a binding band of a wire assembly must be formed between an attachment hole of the installation member and an end side of the board.

In a printed wiring board 1, an attachment hole 5A of an installation member 2 laid out and installed toward an end portion of the board 1 is formed at a location in the vicinity of an end side 1a of the board 1, and an insertion hole 5B configured to insert a binding band of a wire assembly thereinto is integrally formed with the attachment hole 5A between the attachment hole 5A and the end side 1a of the board 1 so that a distance L1 from the insertion hole 5B to the end side 1a of the board 1 is more than a thickness of the board 1. A risk of board breakage is removed by setting the distance L2 to more than the thickness of the board 1 by combining the insertion hole 5B and the attachment hole 5A together in order to prevent cracks from occurring in a board part 1 extending from the insertion hole 5B to the end side 1a of the board.