OCB

OCB may refer to:

Arts, entertainment, and media

 * O.c.b. (album), a 2009 album by O.S.T.R.
 * "O.C.B.", a song by Joey Badass from his 2015 album B4.Da.$
 * OCB, a song by Billy Ze Kick et les Gamins en Folie on their 1993 self-titled album
 * OCB, a song by Malaa
 * OCB, abbreviation of The Oxford Companion to Beer
 * Orange Catholic Bible, a fictional book from the Dune universe created by Frank Herbert

Brands and enterprises

 * Odet-Cascadec-Bolloré, a brand of cigarette rolling papers manufactured by Republic Tobacco
 * Old Country Buffet, American restaurant chain
 * Orient Commercial Joint Stock Bank (OCB), a large bank located in Vietnam

Sports

 * Óquei Clube de Barcelos, a rink hockey team from Barcelos, Portugal
 * Orlando City B, a soccer team in Florida, United States

Other uses

 * OCB mode, a mode of operation for cryptographic block ciphers
 * Oil circuit breaker, a form of circuit breaker using oil as an insulating medium
 * Oligoclonal bands, bands of immunoglobulins that are seen in a patient's serum or CSF
 * Operations Coordinating Board (1953–1961), a committee of the United States Executive
 * Ordinary course of business, a term in law covering the usual transactions, customs and practices of a certain business and of a certain firm
 * Organizational citizenship behavior, a special type of work behavior