Despite their excellent strength-to-weight ratio, wider use of magnesium (Mg) alloys for light-weight applications is limited by their poor corrosion resistance, especially in chloride-containing environments. The present study shows improved corrosion resistance imparted by nanosecond laser surface processing of a commercial AZ31 (Mg-3Al-1Zn) alloy. Electrochemical studies and salt spray testing (ASTM B117) indicate substantial enhancement of corrosion resistance. This research is from an ongoing collaborative effort with Drs. S. Jana and A. Rohatgi at PNNL. The work is published in Corrosion Science.