MUI, Mui, or mui may refer to:
Computing[edit]
- Magic User Interface, system to generate graphical user interface
- Multilingual User Interface, Microsoft's technology and file name extension for multiple languages on a Windows system
Organizations[edit]
- Indonesian Ulema Council (Indonesian: Majelis Ulama Indonesia), Indonesian Muslim clerical body.
- Muhammad University of Islam
- MUI Group, Malayan United Industries.
Places[edit]
- Mui (मुई), a village in Sawai Madhopur district, Rajasthan
- Mui River in Ethiopia
- Mui, Estonia, a village
People[edit]
- Constance L. Mui (born 1959), American philosopher
- Kong Duen-yee, known as Mui Yee
- Mei (surname), Chinese surname
- Peter Mui, American fashion designer
Economics[edit]
- Matter Under Inquiry, a preliminary investigations by the US Securities and Exchange Commission
- Men's underwear index, an economic index
Other uses[edit]
- mui, ISO 639 code for the Palembang language also known as Musi