Poly(p-oligophenylene amine)s, -[(p-C6H4)m NH](n)- (m = 2-4), receive electrochemical and chemical oxidation similar to polyaniline (m = 1). In the electrochemical oxidation (or p-doping) in aqueous media and acetonitrile, the oxidation of the polymer with m = 3 occurs at higher potentials by about 1.0 and 0.6 V, respectively, compared with that of polyaniline.