This article, through autoethnographic narrative and reflection, in-depth interviews, and focus group discussions, explores how the transnational academic mobility experiences of a Muslim scholar of Islam based in Brunei may influence his identity, research, and teaching. It pinpoints how transnational academic mobilities could (re)produce, sustain and endorse East/West, local/global, and religious/secular dichotomies and binary thinking. Likewise, it shows that transnational academic mobilities often generate ambiguous and divided spaces concerning knowledge production, pedagogy, and identity formation. The article also maintains that contextualizing and engaging (with) the specificity and particularity of place and academic discipline are pivotal in studying transnational academic mobilities. Methodologically, it highlights the role of autoethnographic reflection in bringing out complex experiences and accounts that academics undergo but rarely acknowledge and conceptualize in scholarly work. Such accounts and experiences serve as reminders of the importance of humility, trust, ethics, and reflexivity in academia. Transnational academic mobilities, after all, must not be privileged.