Startups have emerged as critical drivers of economic transformation in emerging nations, fundamentally reshaping traditional economic paradigms through innovation, job creation, and technological advancement. This article examines the multifaceted role of startups in fostering sustainable economic growth across developing economies, analyzing their impact on employment generation, innovation ecosystems, foreign investment attraction, and overall GDP contribution. Through comprehensive analysis of case studies from India, Brazil, Kenya, and other emerging markets, this research demonstrates how entrepreneurial ventures serve as catalysts for economic diversification and competitiveness enhancement.