Samuel Wilbert Tucker (June 18, 1913 – October 19, 1990) was an American lawyer and a cooperating attorney with the National Association for the Advancement of Colored People (NAACP). His civil rights career began as he organized a 1939 sit-in at the then-segregated Alexandria, Virginia public library. A partner in the Richmond, Virginia, firm of Hill, Tucker and Marsh (formerly Hill, Martin and Robinson), Tucker argued and won several civil rights cases before the Supreme Court of the United States, including Green v. County School Board of New Kent County which, according to The Encyclopedia of Civil Rights In America, "did more to advance school integration than any other Supreme Court decision since Brown."