A sheet material feeding apparatus includes a feed-out device that brings the stacked sheet materials conveyed on a floor belt into contact with a pickup roller and feeds the sheet materials out in a direction crossing the conveying direction of the stacked sheet materials by rotation of the pickup roller, and an inclination correcting device provided in an upstream of the feed-out device in its sheet material feeding direction and including an upper roller located at a position higher than that of the pickup roller, that brings an upper side of the stacked sheet materials conveyed towards the feed-out device into contact with the upper roller to correct the inclination of the stacked sheet materials.