Abstract: A polycyclic aromatic compound having a structure consisting of one or two or more of structural units represented by Formula (1) is useful as a material for an organic device such as an organic electroluminescent element such as an organic electroluminescent element; wherein A, B, and C rings are an optionally substituted aryl or heteroaryl ring, at least one ring selected from the group consisting of A, B, and C rings in the structure is a ring represented by Formula (Het-1) or (Het-2), Y1 is B, X1 and X2 are each independently >O or >N—R(R is a substituted or unsubstituted aryl), X3 is >O or >S, one of Za is N and the other is N or C—RZ, Zbs are carbons directly bonded to Y1, X1, and X2, N or C—RZ, RZ is hydrogen or a substituent, and at least one hydrogen in the structure may be substituted with cyano, a halogen, or deuterium.