Provided is a solid state imaging device including: pixels arranged in a first direction and provided in a pixel well region, each of the pixels including a photoelectric conversion element and a pixel output unit configured to output a pixel signal based on a signal generated by the photoelectric conversion element; a first wiring connected to the pixel output unit of each of the pixels and arranged extending in the first direction; a second wiring arranged extending in a direction corresponding to the first direction; a third wiring connected to the second wiring at a connection portion located inside the pixel well region in a planar view; and a differential amplification circuit having two input terminals. The pixel signal is input to one of the input terminals via the first wiring, and a potential of the third wiring is input to the other of the input terminals.