JZ
JZ is an abbreviation for:
- Youth center, see children's and youth recreational facility
- JuristenZeitung
- obsolete for the iodine number (IZ) in chemistry
- Jump On Zero , a conditional jump instruction of the x86 architecture, see x86 processor
- Jehovah's Witnesses , a chiliastic Christian religious community
JZ as a distinguishing mark on license plates:
- Northern Ireland: County Down
- Norway: Ringerike in the province of Viken
JŽ stands for:
- Jugoslovenske Železnice , the former state railway of Yugoslavia
