An imaging apparatus includes a lens barrel, an image sensor, an imaging plate configured to fix the image sensor thereto, an elastic member disposed between the lens barrel and the imaging plate, a fixing member configured to fix the imaging plate to the lens barrel while deforming the elastic member, a heat transfer plate which transfers heat from the imaging plate, and a heat-conductive sheet which is elastically deformable and held between the imaging plate and the heat transfer plate. When the imaging plate is fixed to the lens barrel, the heat-conductive sheet is held between the imaging plate and the heat transfer plate, such that a direction of an elastic force applied to the imaging plate by the elastic member coincides with a direction of an elastic force applied to the imaging plate by the heat-conductive sheet.