An article sorting apparatus includes a conveyance path, a conveyor cell, a loading device, a positioning device, a sorting unit and a control device. The conveyor cell moves along the conveyance path in a first conveyance direction and conveys an article loaded thereon in a second conveyance direction that intersects the first conveyance direction. The loading device loads the article onto the conveyor cell. The positioning device is located opposite the loading device with respect to the conveyance path. The positioning device includes a contact member and a driving unit. The driving unit drives the contact member in the second conveyance direction and brings it into contact with the article loaded onto the conveyor cell. The sorting unit receives the article conveyed by the conveyor cell. The control device controls conveyance of the article in the second conveyance direction. The control device controls the driving unit of the positioning device.