The 35Cl-NQR spectra of 27 chloroanilinium salts, [ClxC6H5-xNH3 ⊕] X⊖, mainly chlorides and bromides, were investigated at 77 °K. The 35Cl-NQR frequencies were tentatively assigned to certain chlorine atoms at the benzene ring. The substituent influence of the — NH3 ⊕X⊖ group is discussed in terms of the NQR substituent parameter x. The electron attracting power of this group is clearly revealed. It decreases in the order ortho > meta > para of the substitution at the benzene ring with regard to the chlorine position. The substituent parameters x and σ(Hammett) are compared for the —NH3 ⊕X⊖ group and the — NH2 group. The anion in the anilinium salts, Xe, seems to have no influence on the charge distribution within the aromatic system.