The experience of members of the Muslim Students Society of Nigeria (MSS), an associational group founded in 1954 in southwest Nigeria, is an example of interreligious encounters. Established to challenge Christian groups, the MSS has aimed to provide Islamic learning and sociability for Muslim students in the school system which mediates their encounter and shared educational goals with Christian students. This has been accomplished through the adoption of several practices from the Christian other, while also criticizing ‘traditional’ religious practices as Christians also do. Despite differences in their fundamental religious canons, MSS has traced many of these adopted practices to Islamic tradition. This makes it relevant to conceptualize the history of MSS within the framework of religious plurality which shows the complexity of how religion is lived in a multi-religious setting of Yorubaland, rather than a narrow focus on Islam without the encounter with Christianity. However, taking religious multiplicity as a framework calls for the use of interdisciplinary tools to study the wide range of issues that are often entangled in such interreligious encounters. Based on ethnographic and historical data on the MSS, this paper underscores the importance of studying interreligious encounters within the framework of multiplicity and demonstrates how interdisciplinary tools can aid such a framework.