A speaker grille has a grille base, a plurality of front through holes formed on a front side of the grille base, and a plurality of back through holes formed on a back side of the grille base, each of the plurality of front through holes communicating with one of the plurality of back through holes at its inner end. The front through holes are smaller than the back through holes at the inner ends. Such speaker grille is formed by injection-molding a resin using a mold having a stationary half provided with a plurality of stationary side mold pins, and a movable half provided with a plurality of movable side mold pins. The stationary half is designed to form a front side of the speaker grille. The stationary mold pins have distal end faces that are smaller than distal ends faces of the movable mold pins.