Corrosion inhibition performance of an environmentally friendly compound, 8-hydroxyquinoline (8-HQ), on X60 steel was investigated in 15% hydrochloric acid (HCl), which simulate oil well acidizing environment. Efficacy of the inhibitor was examined utilizing weight loss, potentiodynamic polarization (PDP), electrochemical frequency modulation (EFM), linear polarization (LPR), and electrochemical impedance spectroscopy (EIS). Results show increased inhibitor efficiency with increase in concentration of 8-HQ and was further enhanced when iodide ions were added.