This study aimed to examine the prevalence, related factors, and emotional problems associated with teacher harassment victimization in adolescents with autism spectrum disorder (ASD) assessed by self-reports and parent reports. A total of 219 adolescents with ASD participated in this study. The self-reported and parent-reported rates of teacher harassment victimization were calculated. Sociodemographic characteristics, parent-reported social communication deficits, attention-deficit and hyperactivity disorder (ADHD) symptoms, oppositional defiant disorder (ODD) symptoms, self-reported depression and anxiety symptoms, and suicidality were surveyed. In total, 26 (11.9%) adolescents with ASD experienced teacher harassment based on self-reports or parent reports; the convergence between adolescent and parent reports on adolescent experiences of teacher harassment was low. Victims of teacher harassment exhibited more severe social communication deficits and ODD symptoms than nonvictims of teacher harassment. Victims of teacher harassment displayed more severe depression and anxiety and were more likely to have suicidality. Socio-communication deficits and ODD symptoms were related to teacher harassment victimization, which in turn was significantly associated with emotional problems among adolescents with ASD.