The current study aimed to identify the perceived parenting styles, and the critical thinking level among the tenth-grade students in the schools of Al-Dhahirah governorate in the Sultanate of Oman and the critical thinking's relation with the perceived parenting styles among the study sample. And to identify the differences in the perceived parenting styles of and the differences in critical thinking among the study sample members that are attributed to the gender variable. The study sample consisted of (343) male and female students who were chosen randomly. The researcher used a scale of parenting styles done by Farouk Jibril and Watson & Glaser's Critical Thinking Test. The study found that the parenting styles that were common to the study sample were as following: (modesty/ obsession), (tolerance/ rigorism), (conformity/ nonconformity), (protection/ negligence). The results also showed that the level of critical thinking in the sample of the study was high in the fields of (inference, evaluation of arguments, and conclusion), and average (classification, interpretation, predicting). The results showed that there was no statistically significant correlation between the perceived parenting styles and the critical thinking level among the study sample. There were also no statistically significant differences in the perceived parenting styles in the sample of the study due to the gender variable. The results showed that there were no statistically significant differences in the level of critical thinking among the sample of the study according to the gender variable in all fields except in the fields of ability to infer and explain. The statistical significance was in favor of males.