The title salt, C5H6N+·C7H4F3O3S , is an ion pair in which the pyridium cation is linked to the 4-(trifluoromethyl)benzenesulfonate anion by an N—H...O hydrogen bond. The F atoms of the trifluoromethyl group are disordered over two sites in a 0.584 (9):0.416 (9) ratio.
