HWB

HWB may refer to:


 * Hwb, a Welsh education website
 * HWB color model, a representation of points in an RGB color model
 * Hardware write block device, a type of computer hard disk controller
 * Hawaii Winter Baseball, a defunct professional baseball league
 * Health and wellbeing board, various statutory bodies in England
 * Heavy Water Board, of India's Department of Atomic Energy
 * Helmert–Wolf blocking, a statistical algorithm
 * Hochwohlgeboren, an honorific in Europe
 * Homeopaths Without Borders, a pseudoscientific nonprofit organization
 * Hybrid wing body, a type of fixed-wing aircraft