HI
- Always (Xiu Xiu album)
- H I region
- HY (disambiguation)
- Hainan
- Harlem International Film Festival
- Hawaii
- Health informatics
- Hello Internet
- Hemagglutination inhibition
- Hi (Armenian letter)
- Hi (EP)
- Hi (Ofra Haza song)
- Hi (Texas song)
- Hi (album)
- Hi (cuneiform)
- Hi (kana)
- Hi (magazine)
- Hi Brigham
- Hi Brown
- Hi Records
- Hi River
- Hi and Lois
- High (disambiguation)
- Hindi
- Historical institutionalism
- Hi~
- Hormonal imprinting
- Hostelling International
- Hotel Indonesia
- Houston Industries Incorporated
- Human interface
- Humorous Interpretation
- Hydrogen iodide
- Hydrogen-1
- Madeon discography
- Subtitles
- University of Iceland