According to one embodiment, electronic device includes first board, second board, first component, and second component. The first board includes first and second faces and to which opening and cutout portion is provided. The opening penetrates through the first board. The cutout portion extends to side separating from center of the opening at edge of the opening. The second board includes third and fourth faces. The second board overlaps the first board and is electrically connected to the first board in state in which the fourth face and the first face face each other. The second board covers the opening. The first electronic component is provided to the third face, and electrically connected to the second board. The second component is provided to the fourth face and electrically connected to the second board in state in which at least portion of the second component is held in the opening.