The title compound, C(13)H(11)Cl(2)NO(2)S, contains two molecules in the asymmetric unit in which the dihedral angles between the benzene rings are 76.0 (1) and 79.9 (1)°. The conformations of the N-H bonds with respect to their adjacent ortho-chlorine atoms are syn. In the crystal, N-H⋯O hydrogen bonds link the molecules into dimers.