MANAJEMEN CROWDFUNDING KOIN NU DALAM PENGEMBANGAN LAYANAN AMBULANS BERBASIS FILANTROPI ISLAM DI KABUPATEN BANTULNIM.: 24200011100Mambaul BahriauthorThis study examines the management of KOIN NU crowdfunding in the development of ambulance services based on Islamic philanthropy in Bantul Regency. The research focuses on the role of social capital and trustworthiness in fundraising, accountability and institutional capacity in sustaining services, and the operational practices of ambulance services in meeting community needs. The study employs a qualitative method with an embedded single-case study approach. Data were collected through 22 in-depth interviews, document analysis, and observation of the regency-level ambulance network and four service units in Banguntapan, Jetis, Pleret, and Piyungan. The findings indicate that KOIN NU's cultural crowdfunding relies on repeated micro-donations through donation boxes, volunteers, community forums, and NU's socio-religious networks. Social capital functions as mobilization infrastructure through networks, solidarity, and reciprocity, while trustworthiness built through ability, benevolence, and integrity encourages community willingness to donate. Service sustainability is supported by NU's organizational structure, SOPs, reporting systems, coordination, volunteers, and diverse funding sources. However, recording systems, asset management, financial reserves, and human resource capacity are not yet fully standardized, so sustainability still relies heavily on the strength of social networks. In practice, ambulance services are relatively accessible through personal and social networks, with flexible financing and the ability to transfer services between units. The study concludes that the sustainability of KOIN NU ambulance services is conditional: strong in solidarity, trust, and adaptation, but requiring institutional strengthening through service standardization, data integration, asset management, recurring financing, human resource development, complaint mechanisms, and continuous evaluation.361.3 Pekerjaan Sosial, Filantropi2026-08-19UIN SUNAN KALIJAGA YOGYAKARTA;PASCASARJANAThesis