A photoelectric conversion element according to an embodiment of the present disclosure includes: a first electrode; a second electrode disposed to be opposed to the first electrode; and an organic photoelectric conversion layer provided between the first electrode and the second electrode. The organic photoelectric conversion layer has a domain of one organic semiconductor material therein. The domain of the one organic semiconductor material has a percolation structure in which the domain vertically extends in the organic photoelectric conversion layer in a film-thickness direction, and has a smaller domain length in a plane direction of the organic photoelectric conversion layer than a domain length in the film-thickness direction of the organic photoelectric conversion layer.