An electronic device includes a housing and a camera module in the housing. The camera module includes a camera housing, a lens assembly disposed in the camera housing, an image sensor disposed in the camera housing and at least partially aligned with an optical axis of the lens, a metal plate including a first area that overlaps the image sensor when viewed in a direction of the optical axis and a second area around the first area, and a circuit board at least partially attached to the metal plate and electrically connected with the image sensor. A slit that penetrates the metal plate or a recess concavely defined in a surface of the metal plate is defined in the second area of the metal plate.