The study investigated the relationship between collaboration and service delivery in Bundibugyo Local Government, Bundibugyo District. The research utilized a mixed-methods design, integrating quantitative and qualitative data collection approaches. A sample of 220 respondents was selected from a target population of 300, comprising traditional leaders, local government officials, local council leaders, service providers, and local citizens. Data collection employed interviews and questionnaires, with purposive sampling applied for key informants and simple random sampling for service providers and citizens. Findings revealed a significant positive relationship between collaborative practices and service delivery outcomes. Inter-departmental collaboration, partnerships with nongovernmental organizations, coordination between local government and traditional institutions, and stakeholder engagement were strongly associated with improved service delivery in health, education, water, and infrastructure sectors. However, challenges including limited coordination mechanisms, resource competition, conflicting organizational interests, communication gaps, and inadequate collaboration frameworks constrained optimal collaborative service delivery. The study concluded that enhanced collaboration among stakeholders could significantly improve service delivery effectiveness in Bundibugyo Local Government. Recommendations included establishing formal coordination structures, developing partnership frameworks, strengthening communication systems, building collaborative capacity, and creating incentive mechanisms for inter-organizational cooperation.