In the title compound, C24H16O2, the naphthalene ring system makes dihedral angles of 78.5 (6) and 65.5 (7)° with the terminal and central benzene rings, respectively. The dihedral angle between the benzene rings is 74.5 (8)°. In the crystal, neighbouring molecules are interlinked through two C—H⋯π interactions, which construct a two-dimensional supramolecular framework extending infinitely along (010).