Mr. B

Mr. B may refer to:
 * Mr. B (album), an album by jazz trumpeter Chet Baker

People

 * George Balanchine, choreographer, co-founder and balletmaster of the New York City Ballet
 * Mark Braun, a boogie-woogie piano player
 * Billy Eckstine, a jazz bandleader and balladeer
 * A codename for John Murphy, a loyalist paramilitary from Northern Ireland
 * The nickname of Bernard Lansky, the owner of the famed Lansky Brothers clothier in Memphis, Tennessee
 * Mr. B The Gentleman Rhymer, alter ego of musician Jim Burke

Characters

 * Mr. B, a character in the literacy program The Letter People
 * Mr. B, a character in Samuel Richardson's book, Pamela, or Virtue Rewarded
 * Mr. B, a character in the Nigerian sitcom Basi & Company
 * The nickname Hazel uses for the character George Baxter in the T.V. sitcom Hazel (1961-1966)