Abstract: An apparatus for cleaning and disinfecting a toilet seat. The apparatus comprises a chamber housing a water flushing tank and a tank of disinfecting and cleaning product, means for removing a used seat and replacing this used seat with a clean, disinfected seat, this means comprising two endless chains driven by an electric drive motor and to each of which each seat is connected by its back edge. Rails are provided for guiding the seats along their travel in the chamber. Means are provided for automatically controlling the opening of a door allowing the seats to pass into the chamber. The seats are washed by means of a spraying ramp inside the chamber. Locking means are provided on the door and chamber to assure locking of the door in a closed position. A seal is inserted between the door and the chamber, which locking means can be neutralized by associated unlocking means carried by at least one of the chains, at the beginning of the cleaning cycle, while crushing the seal permits the door to be locked.