ZB

ZB or Zb may refer to:

Businesses and organisations

 * Monarch Airlines (IATA code ZB)
 * Zbrojovka Brno, a former Czechoslovakian state producer of small weapons and munitions
 * Zentralbahn, a Swiss railway
 * Zentralblatt MATH, now zbMATH, international mathematics article reviewing service

Computing

 * Zettabit (Zb), a unit of information used, for example, to quantify computer memory or storage capacity
 * Zettabyte (ZB), a unit of information used, for example, to quantify computer memory or storage capacity

Other uses

 * MG Magnette ZB, the second iteration of the MG saloon of the 1950s
 * Newstalk ZB, a national talkback station in New Zealand, whose callsign is ZB
 * ZB conference, on the Z notation and B-Method, co-organized by the Z User Group and APCB
 * ZB Holden Commodore an Australian version of the Opel Insignia