This book uncovers the neglected yet vital role of Caucasian Muslim intellectuals in shaping the Iranian Constitutional Revolution of 1906-1911. Challenging the prevailing view of the revolution as a nationally confined episode, it situates this transformative event within a broader trans-border and imperial context. By tracing the lives and works of Muhammad Amin Rasulzada, Jalil Muhammad Quluzada, and Mirza Ali Akbar Sabir, the book introduces the concept of "Borderland Intellectuals"- figures who moved between languages, empires, and ideologies, transmitting reformist ideas through print culture, satire, and political cartoon. Drawing on sources in multiple languages and overlooked archives, the study demonstrates how these intellectuals helped connect the Iranian struggle to parallel movements in the Ottoman Empire and Tsarist Russia, reshaping the intellectual geography of the Muslim world.