An anodic stripping voltammetric method for the simultaneous determination of traces of In, Cd, and Pb in pure gallium has been proposed. The limits of tolerance of Ga, Cu, and Bi have been studied, and the interference of Tl with In has been eliminated. When the cadmium and lead contents are not too low and thallium content is less than 2 μg in 20 ml sample solution, the procedure can be further simplified. Potassium bromide solution (2 M, pH 2) was used as supporting electrolyte. The lowest determinable concentrations of cadmium, indium and lead are 4×10^-8, 1.1×10^-7, and 2.5×10^-8 M, respectively.