E. D. Nixon and Rosa Parks lead the Montgomery Bus Boycott.

The Montgomery bus boycott was a political and social protest campaign against the policy of racial segregation on the public transit system of Montgomery, Alabama. It was a foundational event in the civil rights movement in the United States. The campaign lasted from December 5, 1955the Monday after Rosa Parks, an African-American woman, was arrested for her refusal to surrender her seat to a white personto December 20, 1956, when the federal ruling Browder v. Gayle took effect, and led to a United States Supreme Court decision that declared the Alabama and Montgomery laws that segregated buses were unconstitutional.

Edgar Daniel Nixon (July 12, 1899 – February 25, 1987), known as E. D. Nixon, was an American civil rights leader and union organizer in Alabama who played a crucial role in organizing the landmark Montgomery bus boycott there in 1955. The boycott highlighted the issues of segregation in the South, was upheld for more than a year by black residents, and nearly brought the city-owned bus system to bankruptcy. It ended in December 1956, after the United States Supreme Court ruled in the related case, Browder v. Gayle (1956), that the local and state laws were unconstitutional, and ordered the state to end bus segregation.

A longtime organizer and activist, Nixon was president of the local chapter of the National Association for the Advancement of Colored People (NAACP), the Montgomery Welfare League, and the Montgomery Voters League. At the time, Nixon already led the Montgomery branch of the Brotherhood of Sleeping Car Porters union, known as the Pullman Porters Union, which he had helped organize.

Martin Luther King Jr. described Nixon as "one of the chief voices of the Negro community in the area of civil rights," and "a symbol of the hopes and aspirations of the long oppressed people of the State of Alabama."