BZW may refer to: Organizations Barclays de Zoete Wedd, now known as the Barclays Investment Bank Brabants-Zeeuwse Werkgeversvereniging, Brabant-Zealandic Employers association Science and technology Any of two basic leucine zipper and W2 domain-containing proteins (BZW): BZW1 BZW2 .bzw, file extension used by BZFlag Other Blizzard Warning (SAME code BZW), United States weather warning Basa-Benue language (ISO code bzw), spoken in central Nigeria beziehungsweise (abbrev. bzw.), German for respectively or i.e.