In the title compound, C16H13ClN2S, the mean planes fitted through all non-H atoms of the heterocyclic five-membered and the benzene rings are oriented at a dihedral angle of 5.19 (7)°. In the crystal, a weak C—H...π interaction occurs, along with weak π–π interactions [cenroid–centroid distance = 3.7698 (11) Å].