An article supply apparatus includes an inclined passage which inclines downwardly toward a predetermined direction, a vibration imparting device which vibrates the inclined passage, an article feeding device which feeds a plurality of articles to the upper end side of the inclined passage, a visual sensor which captures images of the articles on the inclined passage and which obtains information for identification of at least a position of each of the articles on the inclined passage, and a robot arm which picks up the articles one by one from the inclined passage by using the information obtained by the visual sensor and which supplies the picked-up articles to a predetermined supply destination.