There are provided an organic semiconductor material, which can constitute an organic semiconductor layer having homogeneous and a high level of charge transfer characteristics over a large area, and an organic semiconductor structure and an organic semiconductor device utilizing the organic semiconductor material. The organic semiconductor material comprises a polymeric compound and a monomeric compound, the polymeric compound having, in a part of its side chain, a core structure comprising a predetermined π electron ring, the monomeric compound having a core structure comprising a predetermined π electron ring, the monomeric compound having, in at least one of its both ends, a terminal group capable of developing liquid crystallinity.