BZK

BZK or variant, may refer to:


 * Benzalkonium, a quaternary ammonium cation, frequently used as a biocidal cleanser

Groups and organizations

 * BZK, a cleaning supply and sanitizer company
 * Billy Ze Kick, a French rock band
 * Ministry of the Interior and Kingdom Relations of the Netherlands (BZK; Ministerie van Binnenlandse Zaken en Koninkrijksrelaties), a government ministry
 * BZK (cycling team), former name of the women's pro team Glas–Smurfit Kappa
 * Beijing Zhonghuan Kinetics Heavy Vehicles Co. Ltd (BZK), a subsidiary of ST Kinetics

Places

 * Bryansk International Airport (IATA airport code: BZK; ICAO airport code: UUBP), Bryansk Oblast, Russia
 * Bhaini Khurd station (rail code: BZK), Karnal, Haryana, India; a rail station, see List of railway stations in Haryana

Other uses

 * Miskito Coast Creole (ISO 639 language code: bzk)
 * BzK galaxy, a photometric galaxy classification
 * BzK, a Czech artillery designation, see List of artillery by type
 * BZK, a PRC military designation for UAVs, see List of unmanned aerial vehicles of China