The Twelfth Baptist Church is a historic church in the Roxbury neighborhood of Boston, Massachusetts. Established in 1840, it is the oldest direct descendant of the First Independent Baptist Church in Beacon Hill. Notable members have included abolitionists such as Lewis Hayden and Rev. Leonard Grimes, the historian George Washington Williams, the artist Edward Mitchell Bannister, abolitionist and entrepreneur Christiana Carteaux, pioneering educator Wilhelmina Crosson, and civil rights movement leader Dr. Martin Luther King Jr.