Drop-weight instrumented impact tests were used in conjunction with ultrasonic C-scan inspection to characterize the impact responses of several new graphitefiber composite material systems. The AS4/Hercules 3501-6 graphite/epoxy was compared with the newer AS4/Hercules 2220-1, Celion high-strain/Narmco 5245 and IM6/Narmco 5245C systems in the 394 K (250°F) service category. The materials tested in the 450 K (350°F) service category were T300/Avco 130B, T300/Hexcel 81-5, T300/U.S. Polymeric V378A, XAS/Hysol 9101-3, and HX/Hexcel 1516 graphite/bismaleimides. A material ranking is given, along with measured impact parameters and impact energy versus damage relationships. The impact behavior of all four 394 K (250°F) systems was similar, except that IM6/5245C had the highest impact resistance. The bismaleimides had incipient damage levels similar to those of the epoxies but were more easily punctured. The impact resistance of the five 450 K (350°F) systems was similar except that T300/130B had the lowest impact resistance.