Blacking

Blacking may refer to:


 * Blacking (polish), a nineteenth-century shoe polish
 * Blacking up, putting on a style of theatrical makeup to take on the appearance of certain archetypes of American racism
 * Blacking (cryptography) In NSA jargon, encryption devices are often called blackers, because they convert red signals to black
 * Sanitization (classified information)

People with the surname

 * John Blacking (1928–1990), British ethnomusicologist and anthropologist