This article analyzes the success and failure factors of sports startups in developing countries. Using a narrative review and descriptive analysis, internal factors such as effective management, experienced teams, innovation, and market alignment are identified as key elements of success. Conversely, poor management, lack of experience, financial challenges, and market misalignment are major reasons for the failure of these startups. External factors like infrastructure, government policies, economic conditions, and market competition also significantly impact the performance of sports startups. Countries with better infrastructure and more government support tend to witness greater success in sports startups. In contrast, bureaucratic complexities and lack of adequate support can lead to startup failure. The article compares success and failure factors across different countries, identifying common patterns among these factors. It also highlights the crucial role of cultural and economic differences in determining the success or failure of startups, emphasizing that startups need to adapt their strategies according to local conditions. Finally, the article provides practical recommendations for entrepreneurs, policymakers, and researchers. It also discusses the limitations of the study and offers suggestions for future research, including the need for deeper cultural and economic analysis and the examination of the impact of new technologies in this field.