This qualitative study examines examples of multicultural attitudes in pesantren (Islamic boarding school) in South Sulawesi, Indonesia. It employs focus group discussions (FGD), in-depth interviews and participatory observations research methods to figure out multicultural life at Pesantren Darul Istiqamah (DI), a non-denominational pesantren in Maros, South Sulawesi--Indonesia. The research subjects were ustad (teacher), students (santri), and kyai (religious leaders) of the pesantren. The data were analyzed, contrasted and compared systematically through an inductive qualitative approach. The researcherss conclude that pesantren have their own perspectives about multiculturalism derived from the holy Koran without adopting Western theories. Their views fundamentally reflect an opinion that human beings are created with differences, so, diversities in language, race, and religion are inevitable and therefore people should respect each other. This philosophy underpins curriculum, teaching-learning process and interactions inside/outside of the pesantren which are inclusive and equally valued all diversity.