A photoelectric conversion device is provided and includes: a photoelectric conversion panel in which light detection portions each having a charge storage portion storing light as electric charges are two-dimensionally arranged a reading control unit that reads the electric charges stored in the charge storage portions of the photoelectric conversion panel for each reading signal line and a reset unit that is connected to the reading signal lines and discharges residual charges of the charge storage portions for each reading signal line. The reading control unit and the reset unit are arranged at different end portions of the photoelectric conversion panel.