Kinetic pathway of oxidation of pyridine by peroxomonosulphate in an aqueous acid medium has been studied. The reaction is second-order vizfirst-order dependence with respect toperoxomonosulphate and pyridine.Activation parameters have also been evaluated the activation energy (Ea) (49 ± 4) kJ mol-1, and the entropy of activation –(110 ± 10) JK-1 mol-1.The derived Kinetic rate law accounts for experimental observations, and a plausible reaction mechanism has also been suggested.