A noodle strand cutting apparatus for cutting gelatinized noodle strands used in manufacturing of instant noodles is provided with: a conveyer for conveying at least one bundle of the gelatinized noodle strands; and a rotary cutter arranged above the conveyer and intended to cut, to a predetermined length, the at least one bundle of the gelatinized noodle strands conveyed on the conveyer in a substantially horizontal direction. The rotary cutter is provided with a plurality of blades that extend side by side with a rotational axis in radial directions around the rotational axis, the plurality of blades being spaced from each other in a circumferential direction by predetermined intervals.