The anodic dissolution of cadmium has been studied in aqueous solutions containing CI-, Br-, I-, Ac-, SO4 =, and NO3-ions. The normal valence (+2) was found in all solutions with the exception of NO3-. The apparent valence (calculated) of cadmium ions in nitrate solutions varied from 1.2 to 2.0 and was found to be a function of NO3-concentration, current density, and temperature. An anodic dissolution mechanism has been proposed involving local corrosion and disintegration of the anode which is consistent with the experimental results.