The United States Conference of Catholic Bishops (USCCB) is the episcopal conference of the Catholic Church in the United States. Founded in 1966 as the joint National Conference of Catholic Bishops (NCCB) and United States Catholic Conference (USCC), it is composed of all active and retired members of the Catholic hierarchy (i.e., diocesan, coadjutor, and auxiliary bishops and the ordinary of the Personal Ordinariate of the Chair of Saint Peter) in the United States and the Territory of the U.S. Virgin Islands. In the Commonwealth of Puerto Rico, the bishops in the six dioceses form their own episcopal conference, the Puerto Rican Episcopal Conference (Spanish, Conferencia Episcopal Puertorriqueña). The bishops in U.S. insular areas in the Pacific Ocean – the Commonwealth of the Northern Mariana Islands, the Territory of American Samoa, and the Territory of Guam – are members of the Episcopal Conference of the Pacific (Latin, Conferentia Episcopalis Pacifici).
The USCCB adopted its current name in July 2001. The organization is a registered corporation based in Washington, D.C. As with all bishops' conferences, certain decisions and acts of the USCCB must receive the recognitio, or approval of the Roman dicasteries, which are subject to the immediate and absolute authority of the Pope.