HDU

HDU may refer to:


 * Hangzhou Dianzi University, in Hangzhou, China
 * Hard disk drive
 * Hồng Đức University, in Vietnam
 * High dependency unit, a hospital facility
 * High Dependency Unit (band), a New Zealand psychedelic rock band
 * High dependency unit (mental health), a psychiatric treatment facility
 * Croatian Phonographic Association (HDU, Hrvatska diskografska udruga) that publishes the Croatian music chart Top of the Shops