A supply apparatus includes a tank having a front wall, and an inlet via which liquid is poured into the tank; and a cover covering a part of the tank including the front wall, and being formed with an opening to partially expose the front wall of the tank. When the supply apparatus is viewed from the front wall side of the tank, the inlet of the tank and the opening of the cover are arranged to align in an up/down direction. The cover has a first liquid flow channel formed at a periphery of the opening in an inner surface facing the front wall of the tank, and the first liquid flow channel is arranged between the inlet and the opening in the up/down direction.