Provided are a housing and an electronic device that ensure sufficient strength even when reduced in thickness. A carbon fiber layer included in the housing is disposed such that the orientation direction of carbon fibers is perpendicular to the lengthwise direction of the long sides of a back face panel, thus enabling improving the flexural strength of the back face panel. This enables increases in the number of carbon fibers per unit of area of the back face panel, and enables the length of each carbon fiber to be reduced. Accordingly, it is possible to cause the carbon fibers to flex less readily, thus enabling improving the strength in the flexing direction of the back face panel.