In the title compound, C(15)H(13)Cl(2)NOS, the benzene and thio-phene rings make a dihedral angle of 10.8 (1)°. The dimethyl-amino substituent and the α,β-unsaturated carbonyl group are almost coplanar with respect to the aromatic ring, forming dihedral angles of 4.73 (3)° and 5.0 (2)°, respectively. In the crystal structure, mol-ecules are connected into two-dimensional layers by weak C-H⋯Cl hydrogen bonds and C-Cl⋯O [Cl⋯O = 3.073 (2) Å] inter-actions. These layers are stacked with short C(meth-yl)-H⋯π contacts betweeen the layers.