Background: Post-traumatic stress disorder (PTSD) is a mental health concern among traumatized children and adolescents. The specific objective is to describe post-traumatic stress disorder in children (6 to 12 years old) and adolescents (12 to 18 years old). This comprehensive review compiles the clinical interventions targeting PTSD in this age group and systematizes the empirical evidence about their efficacy. Methods: The PRISMA method was used to present and evaluate the clinical interventions implemented for PTSD. Results: Significant symptoms of PTSD include avoidance, overstimulation, and flashbacks, typically accompanied by a depressed mood and anxiety. Cognitive Behavioral Therapy (CBT), trauma-focused CBT, Eye Movement Desensitization and Reprocessing (EMDR), Systemic Therapy, Play Therapy, Exposure Therapy, Relaxation Techniques, and Psychodynamic Psychotherapy are essential interventions for the treatment of patients between the ages of 6 and 18. CBT, particularly Trauma-focused CBT, is the most effective and extensively used therapy for dealing with cases of juvenile PTSD, according to the findings of the vast majority of previous research. Conclusions: The present systematic review summarizes the findings of several studies on psychotherapeutic interventions for PTSD in children and adolescents. PTSD in this population differs from PTSD in adults, necessitating various age-appropriate approaches and therapeutic models.