An organic electroluminescence device in which a polycyclic compound including an electron donor and an electron acceptor is included in an emission layer is provided. The electron donor contains an acridine derivative or a dibenzo-azasiline derivative, and the electron acceptor contains B as a ring-forming atom, O or S directly bonded to B, and a heterocyclic group in which three or five hexagonal rings are condensed. Accordingly, an organic electroluminescence device having high efficiency may be achieved.