A solid-state imaging device which includes a pixel region which is provided on a semiconductor substrate, and in which a plurality of pixels including a photoelectric conversion unit having a photoelectric conversion function is arranged, a wiring layer which is provided at one plate surface of the semiconductor substrate, a color filter layer which is divided into a plurality of color filters provided corresponding to each pixel of the plurality of pixels which is arranged in the pixel region, and an inter-pixel light shielding unit which is provided in a boundary portion between the pixels adjacent to each other, between the semiconductor substrate and the color filter layer.