This study discusses the initiatives of Prof. Dr. Moestopo University (Religious) in fostering harmony and tolerance in the campus environment through community service activities conducted by faculty members and administrators. This paper documents concrete efforts to build multicultural awareness and interfaith harmony on campus. The approach taken integrates tolerance values into the curriculum, facilitates interfaith dialogues that provide a platform for exchanging ideas and experiences, constructs places of worship for various religions, strengthening the symbol of diversity, and establishes a safe space for open discussions about religious differences. The results demonstrate an enhanced understanding of different religions, fostering mutual respect, and cultivating inclusive attitudes and empathy. By embracing religious diversity, Prof. Dr. Moestopo University (Religious) becomes a social laboratory supporting peace and harmony in the broader community. This paper presents a model that can be adopted by other higher education institutions to develop an inclusive and supportive atmosphere in embracing religious diversity.