An organic electroluminescence device includes a first electrode, a hole transport region disposed on the first electrode, a light emitting layer disposed on the hole transport region, an electron transport region disposed on the light emitting layer, and a second electrode disposed on the electron transport region. The light emitting layer includes a heterocyclic compound represented by Formula 1 below. In Formula 1, D1 and D2 are each independently represented by Formula 2 below, and A is represented by any one of Formulas 3-1 to 3-3 below. D1-A-D2  Formula 1