A liquid discharge head includes a plurality of nozzle arrays. A concave portion is formed on a back side of a head substrate, and all supply ports are formed in the bottom of the concave portion. The head substrate and a supporting member are bonded at the bottom of the concave portion so that the supply port and an introduction port communicate with each other. According to such a configuration, a ground contact area can be sufficiently secured, so that a liquid discharge head that is highly reliable and having high heat dissipation ability, and that can be manufactured with high productivity can be achieved.