A kinetic study was made on the anodic dissolution of nickel in sulfuric acid solutions ranging in pH from 0 to 3. Rapid polarization and steady‐state polarization techniques were used. The anodic polarization curve was found to change in appearance with time of polarization; the Tafel constant changed from its initial value of 0.5 to a steady‐state value of 2. Increasing the pH of the solution shifted the anodic polarization curve in the direction of less noble potential, and the dissolution rate at constant potential therefore increased with the increase of ion concentration. The pH dependence of the dissolution rate was estimated to be in the case of both rapid polarization and steady‐state polarization.