HCB

HCB may refer to:


 * Hackbridge railway station, a railway station in South London
 * Harmoni Central Busway, former name of an active BRT station in Jakarta
 * Hampshire Cricket Board, the governing body for cricket in Hampshire, England
 * Hamptons Collegiate Baseball, a summer baseball organization in New York State
 * HCB (classification), a paralympic cycling classification
 * HCB South Tyrol, an ice hockey club in Italy
 * Henri Cartier-Bresson, a French photographer considered to be the father of modern photojournalism
 * Hexachlorobenzene, a toxic fungicide formerly used as a seed treatment
 * Homemade chemical bomb, an explosive device that can be made easily from volatile household chemicals
 * Hydrocarbonoclastic bacteria, a form of oil biodegrader
 * HCB (Fiscal Sponsor, Hack Club), a fiscal sponsorship service that gives you 501(c)(3) status from the Hack Foundation (d.b.a Hack Club)