JZ

JZ, J/Z, or J-Z may refer to:

People:
 * Jay-Z (born 1969), American rapper and business executive
 * John Zachary Young (1907–1997), English zoologist
 * J. Z. Knight (born 1946), American psychic
 * Gesias Calvancanti (born 1983), Brazilian mixed martial artist
 * Jacob Zuma (born 1942), South African politician

Other uses:
 * JZ (x86 instruction) ("jump on zero"), an Intel x86 assembly language instruction
 * J/Z (New York City Subway service)
 * Toyota JZ engine, a straight-6 automobile engine
 * Jugoslovenske Železnice, the Yugoslavian state railway
 * Skyways (airline) (IATA code: JZ)
 * JuristenZeitung, common abbreviation of the German law journal