The corrosion of zinc in phosphoric acid containing aniline has been studied at different acid concentrations, inhibitor concentration and temperatures. As the concentration of acid increases corrosion loss and I.E. (Inhibition efficiency) increases.  As the concentration of   inhibitor increases I.E.  aniline  also increases. As temperature increases corrosion   loss increases while percentage of I.E. decreases. The plot of log (θ/1-θ) versus log C results in a straight line suggest that the inhibitors cover both the anodic and cathodic regions through general adsorption following Longmuir isotherm. Galvenostatic polarization curves show polarization of both anodes as well as cathodes.