Abstract: This essay examines the broad impact of African American thought leadership on early American intellectual history. Though marginalized in many mainstream histories of American intellectual life–which often focus on the emergence of Black philosophers and Black professional historians later in the 19th century -- early national Black thinkers helped shape public understanding of critical ideas in American society and politics, including the meaning of citizenship and civil rights, emancipation and equality, and racial justice. African Americans also influenced public discourses on other key topics in American intellectual life, including the nature of human dignity and spiritual redemption in the Second Great Awakening, the meaning of Romanticism and Transcendentalism in American reform culture, and the authority of science and technology in antebellum society. Using the concept of thought leadership as a framing device to understand the power and impact of early Black ideas, I follow recent trends in the field of African American intellectual history that focus on that way that African American men and women became public authorities on key ideas and issues in American culture between the American Revolution and Civil War. Though they did not often occupy positions of educational, institutional, or legal power (the main provinces of intellectual leadership), Black thought leaders had a significant impact on early American intellectual history.