An organic electroluminescence device comprising: a first electrode; a second electrode facing the first electrode; and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes: a hole transporting first host; an electron transporting second host different from the first host; and a light emitting dopant, and the light emitting dopant includes a fused polycyclic compound represented by Formula 1: wherein in Formula 1, Ar 1 to Ar 3 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted silyl group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, R 1 to R 8 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, R a1 to R a6 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, or are bonded to an adjacent group to form a ring, e, f, h, and i are each independently an integer from 0 to 5, g and j are each independently an integer from 0 to 3, and at least one of R 1 to R 8 is a group represented by Formula 2: wherein in Formula 2, R 9 and R 10 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, or are bonded to an adjacent group to form a ring, and a and b are each independently an integer from 0 to 5. a first electrode; a second electrode facing the first electrode; and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes: a hole transporting first host; an electron transporting second host different from the first host; and a light emitting dopant, and a hole transporting first host; an electron transporting second host different from the first host; and a light emitting dopant, and the light emitting dopant includes a fused polycyclic compound represented by Formula 1: wherein in Formula 1, Ar 1 to Ar 3 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted silyl group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, R 1 to R 8 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, R a1 to R a6 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, or are bonded to an adjacent group to form a ring, e, f, h, and i are each independently an integer from 0 to 5, g and j are each independently an integer from 0 to 3, and at least one of R 1 to R 8 is a group represented by Formula 2: wherein in Formula 2, R 9 and R 10 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, or are bonded to an adjacent group to form a ring, and a and b are each independently an integer from 0 to 5.