The phenomenon of global migration to Seoul, South Korea, presents complex challenges for Indonesian Muslim families, including the cultural pressure of "palli-palli," minority status, difficulties in accessing places of worship, and the risk of social isolation. This study aims to analyze the role of the Ikatan Keluarga Muslim Indonesia (IKMI) as a supportive element in the application of family resilience principles according to Froma Walsh's theory. The research method employed is qualitative with a phenomenological approach. Data were collected through in-depth interviews with active IKMI members in Seoul and participatory observation during community activities. Data analysis utilized the Miles and Huberman model, which consists of data reduction, data presentation, and drawing conclusions. The research shows that IKMI functions as a resilience ecosystem that serves as an "extended family substitute" through the three pillars of Froma Walsh's theory. First, within the belief system, IKMI reinforces spiritual values as an emotional resource and a source of Islamic identity. Second, in the organizational structure, IKMI offers a flexible support system through specialized units such as RUMAISA, IMUSKA, and CISS, as well as the "Kampung Al-Falah" program, which serves as a form of social security. Third, in the communication process, IKMI provides an inclusive space for interaction that facilitates the exchange of values across generations. This study found that the harmony between Islamic values and IKMI's structured support is a key factor in the resilience of migrant families as they balance their spiritual needs with the demands of social adjustment in Seoul.