In the title compound, C(20)H(20)N(2)O(3), the piperidine ring adopts a chair conformation and its mean plane forms dihedral angles of 19.63 (9) and 19.44 (9)°, respectively, with the benzene and the nitro-substituted benzene ring. The benzene and nitro-substituted benzene rings are almost coplanar and make a dihedral angle of 4.78 (8)°. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds into two-dimensional networks parallel to the ab plane. The crystal packing is further stabilized by π-π inter-actions [maximum centroid-centroid distance = 3.7807 (12) Å].