An electronic apparatus is configured to be provided on a back surface of a seat and can be connected with an external apparatus. The electronic apparatus includes a casing, and a connector that is configured to be connected with the external apparatus. The casing includes an inclined surface that is inclined at a prescribed angle or a curved surface that is curved, toward a middle in a lateral width direction, and the connector is disposed in the inclined surface or the curved surface and connectable with the external apparatus in a direction perpendicular to the inclined surface or the curved surface.