Other
- Hui (Māori assembly), a gathering of New Zealand Māori people
- HUI MIDI mapping protocol, an interface between digital audio workstations and connected hardware controllers
- Hui (priestess) or Huy, an ancient Egyptian priestess
- NYSE Arca Gold BUGS Index or HUI Index, an index of gold mining companies
- Phu Bai International Airport (IATA code: HUI) in Huế, Vietnam
- russian swear word.
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