The present disclosure relates to an image sensor device including: a fan-out semiconductor package including a first semiconductor chip having an active surface on which a connection pad is disposed, a first connection member disposed on the active surface and including a redistribution layer electrically connected to the connection pad of the first semiconductor chip, and a sealing material disposed on the first connection member and sealing at least a portion of the first semiconductor chip, a second semiconductor chip disposed on the first connection member and electrically connected to the first connection member; and a third semiconductor chip disposed on the second semiconductor chip and electrically connected to the second semiconductor chip, in which at least one of the second semiconductor chip or the third semiconductor chip may be an image sensor. The present disclosure also relates to an image sensor module including the image sensor device.