The electrical transport properties of hydroiodic acid doped polyaniline in the temperature range 77 <= T <= 300 K were studied. The magnetic field strength was varied to a maximum of 1T in the frequency range of 20 Hz-1 MHz. The ac conductivity followed the universal dielectric response sigma'(f) alpha f(s). The trend in the variation of 's', the temperature dependence of the frequency exponent, indicated that correlated barrier hopping is the dominating charge transport mechanism. The ac conductivity also shows a positive variation with magnetic field, which can be interpreted by Maxwell-Wagner capacitor model. POLYM. ENG. SCI., 49:910-915, 2009. (C) 2009 Society of Plastics Engineers