The current study aimed at assessing the knowledge level of teachers of children with Autism Spectrum Disorder about the Importance of Applied Behavior Analysis (ABA) strategies in Zarka City. Furthermore, the study attempted to explore whether teachers' knowledge level differ according to their gender, years of experience, level of education, or specialized training. The sample of this study comprised of (60) teachers (25 male and 35 female). In order to achieve the goals of this study, the researcher constructed a questionnaire. The final version of it consisted of (27) items. The results showed that teachers of children with Autism Spectrum Disorder were given a high degree of importance on the whole scale. The mean was (2.95). The results also indicated no statistically significant differences in total degrees of importance of (ABA) strategies can be attributed to gender or level of education, while there were statistically significant differences in total degrees of importance of (ABA) strategies can be attributed to training. Finally, the results indicated statistically significant differences in total degrees of importance and no statistically significant differences in total degrees of use of (ABA) strategies can be attributed to years of experience.