Abstract: A concrete slab corner support is a unitary corner support and reinforcement element for a concrete slab or the like. The corner support element is placed inside the corner of a form prior to pouring concrete therein to form a concrete slab. A corner support is placed in each corner of the form and affixed to the form with nails, or screws through break-away flanges extending outward from the upper end of the support. The corner support is an angle element forming two walls defined by a center angle bend and the outer edges thereof. A series of rod-like or finger-like anchors extend from the inner sides of the walls inwardly toward the middle of the form. These anchors help the corner support to remain attached to the pad or foundation when the process is complete. Once the concrete has set, the forms and bread-away flanges are removed.