Provided is an imaging device including a substrate; a pixel array in which pixels are arranged in a two-dimensional manner on the substrate, each pixel including a photoelectric conversion unit that accumulates charges generated from an incident light, a charge holding unit that holds the charges transferred from the photoelectric conversion unit, and an amplification unit that receives the charges transferred from the charge holding unit; and a light-shielding portion arranged to cover at least the charge holding unit. The photoelectric conversion unit and the charge holding unit in each pixel are aligned in a first direction in a top view orthogonal to the substrate. The charge holding units of the neighboring pixels are aligned in a second direction intersecting the first direction in the top view. The light-shielding portion extends in the second direction and over the charge holding units, and covers a region between the charge holding units.