A cathodic, aqueous-based technique for producing uniform, thin, passive films of poly(methyl methacrylate) and poly(glycidylacrylate) on stainless steel electrodes was developed. The films were chemically characterized by Fourier transform infrared spectroscopy, NMR spectroscopy, and differential scanning calorimetry. The thickness (quantified by ellipsometry) and morphology of the films were dependent on the electrolysis time and potential and were also influenced by the individual monomer properties.