The American civil rights leader who delivered the "I Have a Dream" speech is Martin Luther King Jr.. This iconic speech was delivered during the 1963 March on Washington for Jobs and Freedom, where King articulated his vision of a racially integrated and harmonious America. The speech emphasized equality, justice, and the urgent need to address racial injustice. King's powerful rhetoric and commitment to non-violence galvanized the civil rights movement and inspired millions worldwide. His advocacy for civil rights through peaceful protest and his unwavering vision for social justice remain foundational to contemporary discussions on race and equality.