This article explores the profound and far-reaching consequences of populism on democracy across the globe. Populism, characterized by its appeal to the masses and vilification of established elites, has become a potent force in shaping political landscapes worldwide. Through an interdisciplinary lens drawing on political science, sociology, and economics, we analyze how the rise of populism challenges the fundamental pillars of democracy. We investigate its impact on democratic institutions, governance structures, and political culture, highlighting its tendencies to exacerbate polarization, erode trust in democratic processes, and undermine the rule of law. Moreover, we examine the economic ramifications of populist policies, often marked by protectionism and short-termism, which can destabilize economies and exacerbate social inequalities. Additionally, we explore the implications of populism for international relations, including its potential to disrupt diplomatic norms and alliances. By synthesizing empirical research and theoretical insights, this article provides a comprehensive understanding of the multifaceted consequences of populism on democracy, offering insights for policymakers, scholars, and concerned citizens seeking to safeguard democratic principles in an era of populist resurgence.