The study titled "Learning Arabic as a Second Language in Saudi Universities: Ajzen’s Theory and Religious Motivations" investigates the motivations and challenges faced by learners of Arabic as a second language (ASL) in Saudi universities. Using Ajzen's theory of planned behavior as a framework, the study analyzed the intentions, attitudes, and beliefs of 61 ASL learners from 25 countries across seven Saudi universities. The quantitative results reveal that learners have positive intentions and attitudes towards learning Arabic, influenced by social psychological factors. The qualitative findings highlight religious motivations, such as the importance of Arabic in sacred texts and its connection to Islamic teachings. However, challenges include the use of local dialects by instructors and insufficient training in teaching ASL. The study recommends that policymakers consider these social and religious factors when designing curricula and encourages further research using interdisciplinary theories to better understand ASL learners' perspectives.