In the title compound, C(16)H(17)N(3)O, the benzotriazole ring forms a dihedral angle of 77.25 (6)° with the phenyl ring. The benzotriazole ring is essentially planar with a maximum deviation of 0.012 (19) Å. Weak inter-molecular C-H⋯O hydrogen bonds form R(2) (2)(10) motifs. The crystal packing is consolidated by π-π inter-actions with centroid-centroid distances of 3.5994 (12) Å together with very weak C-H⋯π inter-actions.