A solid-state image pickup apparatus includes an image pickup pixel unit in which a plurality of pixels each including a photoelectric conversion element and a field-effect transistor are arranged on a semiconductor substrate so that a light-receiving surface is disposed at a first surface side of the semiconductor substrate; a peripheral circuit unit provided at a periphery of the image pickup pixel unit of the semiconductor substrate; and a multilayered wiring layer in which a plurality of wiring layers for driving the field-effect transistor of the image pickup pixel unit are laminated at a second surface side of the semiconductor substrate, wherein a wiring in each of the wiring layers constituting the multilayered wiring layer is disposed so that a coverage of the wiring located at least in the image pickup pixel unit of the semiconductor substrate reaches 100%, viewed from the second surface side.