A centrifugal fan comprising: a circular main plate to be rotationally driven; an annular shroud disposed so as to face the main plate; and a plurality of blades that are each connected to the main plate at one end and to the shroud at the other end and that are disposed to be spaced apart in the circumferential direction of the main plate, wherein the blades each have a blade trailing edge portion located on the outer peripheral side of the main plate, and a blade leading edge portion located closer to a center of rotation of the main plate than the blade trailing edge portion, a part of the blade leading edge portion close to the main plate forms a blade inner peripheral side leading edge portion (4a1) that is substantially perpendicular to the main plate, a part of the blade leading edge portion close to the shroud forms a blade shroud side leading edge portion (4a2) that extends in such an inclined manner that the more distant from the main plate, the closer to the blade trailing edge portion, characterized in that at least one of a pressure surface of the blade and a suction surface of the blade has a blade leading edge side jagged portion formed at a blade leading edge portion side of the blade, the blade leading edge side jagged portion including a recessed portion extending substantially along the blade leading edge portion and being recessed in the thickness direction of the blade, and an inclined portion in which the thickness of the blade gradually increases toward the blade trailing edge portion from the recessed portion, and wherein in the blade leading edge side jagged portion, a plurality of consecutive cutout shapes are formed that are alternately protruded and recessed in a direction substantially perpendicular to the blade leading edge portion. a circular main plate to be rotationally driven; an annular shroud disposed so as to face the main plate; and a plurality of blades that are each connected to the main plate at one end and to the shroud at the other end and that are disposed to be spaced apart in the circumferential direction of the main plate, wherein the blades each have a blade trailing edge portion located on the outer peripheral side of the main plate, and a blade leading edge portion located closer to a center of rotation of the main plate than the blade trailing edge portion, a part of the blade leading edge portion close to the main plate forms a blade inner peripheral side leading edge portion (4a1) that is substantially perpendicular to the main plate, a part of the blade leading edge portion close to the shroud forms a blade shroud side leading edge portion (4a2) that extends in such an inclined manner that the more distant from the main plate, the closer to the blade trailing edge portion, characterized in that at least one of a pressure surface of the blade and a suction surface of the blade has a blade leading edge side jagged portion formed at a blade leading edge portion side of the blade, the blade leading edge side jagged portion including a recessed portion extending substantially along the blade leading edge portion and being recessed in the thickness direction of the blade, and an inclined portion in which the thickness of the blade gradually increases toward the blade trailing edge portion from the recessed portion, and wherein in the blade leading edge side jagged portion, a plurality of consecutive cutout shapes are formed that are alternately protruded and recessed in a direction substantially perpendicular to the blade leading edge portion.