The inhibitive effect of polymeric surfactants on the corrosion of carbon steel in 0.5M HCl has been investigated by weight loss and polarization techniques. Potentiodynamic polarization measurements showed that these compounds are mixed type inhibitors. The adsorption of these inhibitors on carbon steel surface obeys Langmuir adsorption isotherm. The effect of temperature on the corrosion behavior of carbon steel in hydrochloric acid in presence of the most effective concentrations of the inhibitors was studied in temperature range (25 – 70°C). The associated activation energy of carbon steel corrosion as well as energy of adsorption of studied compounds has been determined.