Background: Coping and psychological defence skills are frequently used when individuals experience trauma, stress, and anxiety. Objective: To examine the roles of Coping and psychological defence skills in traumatized adolescents exhibiting post traumatic stress disorder (PTSD) symptoms. Methods: A sample of 1016 adolescents aged 12 to 17 answered the Coping Style Questionnaire-3, Defence Style Questionnaire-40, Traumatic Event Checklist, Harvard Trauma Questionnaire and a socio-demographic questionnaire. Results: Results showed that traumatized adolescents significantly used all coping styles: emotional focused, avoidance, rational, and detached. Similarly, adolescents with PTSD symptoms significantly used all the coping styles than those without PTSD symptoms: emotional focused, avoidance, rational and detached. Traumatized adolescents significantly used immature style, mature style than non-traumatized adolescents. Similarly, adolescents with PTSD symptoms significantly used immature defence style, mature style and neurotic style. Conclusion: Traumatized adolescents demonstrate a greater use of avoidance coping style, whereas non-traumatized adolescents tend to use rational coping style. Improving coping skills might directly improve traumatized adolescents__ampersandsignrsquo; daily functioning.