The present technology relates to a semiconductor device, a manufacturing method of a semiconductor device, a semiconductor wafer, and electronic equipment, which allow a semiconductor device, in which miniaturization is possible, to be provided. A semiconductor device includes a semiconductor substrate, a wiring layer that is formed on the semiconductor substrate, and a drive circuit that is provided in a circuit forming region of the semiconductor substrate. Then, the semiconductor device is configured to include a pad electrode that is electrically connected to the drive circuit and exposed from the side surface of the wiring layer, and an external connection terminal that is provided in side surfaces of the semiconductor substrate and the wiring layer, and is electrically connected to the pad electrode.