The invention provides an electromagnetic wave shielding sheet, a printed wiring board and an electronic device. The electromagnetic wave shielding sheet containing the black colorant comprises an insulating layer and a conductive adhesive layer, and satisfies any one of (1) to (3): (1) The insulating layer contains a black colorant, the 85 DEG glossiness is 15 to 50, the L * value in the L * a *b * color system is 20 to 30, and the average primary particle diameter and content of the black colorant are set in a specific range. And (2) the insulating layer contains a black colorant, and the contact angle between the surface of the insulating layer and water is 60-110 degrees. (3) The insulating layer is formed of a transparent resin composition, the contact angle between the surface of the insulating layer and water is 60-110 degrees, and the black layer contains a black colorant. According to the present invention, it is possible to provide an electromagnetic wave shielding sheet having an insulating layer having excellent print visibility.