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
This disambiguation page lists articles associated with the title HDU.
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