The title compound, C(16)H(13)IO(2)S, was prepared by the oxidation of 2-(4-iodo-phen-yl)-5-methyl-3-methyl-sulfanyl-1-benzofuran with 3-chloro-peroxy-benzoic acid. The 4-iodo-phenyl ring makes a dihedral angle of 37.97 (9)° with the plane of the benzofuran fragment, and the O atom and the methyl group of the methyl-sulfinyl substituent lie on opposite sides of this plane. The mol-ecular packing is stabilized by C-H⋯π inter-actions between H atoms on the 4-iodo-phenyl ring and the benzofuran rings, and by an I⋯O halogen bond of 3.252 (2) Å with a nearly linear C-I⋯O angle of 163.06 (8)°. In addition, the stacked mol-ecules exhibit inversion-related S⋯O contacts [3.209 (2) Å] involving the sulfinyl groups.