The Diniyah Conversion Taklim Assembly (MTKD) in Bandung City introduces a new learning model, as its instructors (mudarris) are religious counselors directly appointed by the Bandung City Office of the Ministry of Religious Affairs and hold civil-servant status, either as Civil Servants (PNS) or Government Employees under Work Agreements (PPPK). These mudarris teach adult students (santri) who vary in age, occupation, and life experience, which requires an educational communication approach different from conventional practice. This study aims to describe and analyze the andragogical communication applied by mudarris at MTKD Al-Ikhlas, Bandung City. This study employed a qualitative method with a case study approach. Data were collected through participant observation, in-depth interviews with three primary informants, and documentation study, then analyzed interactively based on the theory of andragogy proposed by Malcolm Knowles. The results show that religious counselors adapted five of the six dimensions of andragogical communication, namely an equal communication climate, experience-based communication, dialogic and interactive communication, the provision of feedback, and media and language. These findings highlight the mudarris's role as an egalitarian communicator, in line with the participatory instructional communication model. This study concludes that mudarris at MTKD Al-Ikhlas prioritize creating a mutually respectful classroom atmosphere, two-way communication that draws on students' life experiences as the primary source and material for dialogue, and the delivery of feedback or corrections in a courteous manner. These findings contribute theoretically to the development of andragogical instructional communication studies in the field of nonformal religious education, as well as practically to religious counselors at the Bandung City Office of the Ministry of Religious Affairs and taklim assembly managers in designing instructional communication training for civil-servant instructors.