One hundred Vietnam veterans with combat‐related PTSD were administered the NEO Personality Inventory (NEO‐PI) and the Combat Exposure Scale and were sorted into three groups based on trauma exposure level. Results indicate no significant differences among the personality profiles of the three trauma‐exposed groups. A normative NEO‐PI profile for persons diagnosed with combat‐related PTSD is presented, characterized by an extremely high Neuroticism score (T>75) and an extremely low Agreeableness score (T<25).