In the crystal structure of the title compound, C13H10ClNO3S, the conformation of the N—H bond in the C—SO2—NH—C(O) segment is anti to the C=O bond. The dihedral angle between the two aromatic rings is 68.6 (1)°. The molecule is twisted at the S atom with a dihedral angle of 75.7 (1)° between the sulfonyl benzene ring and the —SO2—NH—C—O segment; the dihedral angle between the latter and the benzoyl ring is 8.3 (2)°. In the crystal, molecules are linked by N—H⋯O(S) hydrogen bonds.