The Sb(V) atom in the title compound, [SbCl2(C6H4Br)3], has an almost regular trigonal-bipyramidal geometry with the equatorial plane made up of three C atoms of the bromo-phenyl groups and the axial positions occupied by two Cl(-) ions in a trans configuration. In the crystal, C-H⋯Br hydrogen bonds link the mol-ecules into zigzag chains along the b-axis direction. Pairs of C-H⋯Cl hydrogen bonds further link mol-ecules into cyclic dimers with R2(2)(10) ring motifs, generating a three-dimensional network.