Umi
- Italian Mathematical Union
- Little Battlers Experience
- Love Live! School Idol Project
- Methodist University of Indonesia
- Summer Pockets
- The Idolmaster Million Live!
- UMI (singer)
- Uganda Management Institute
- Umi (song)
- Umi Dachlan
- Umi Garrett
- Umi Ryuzaki
- Umi Sonoda
- Umi Tenjin
- Umi, Fukuoka
- Umi, Iran
- Umi-a-Liloa
- Umidigi
- Unified Media Interface
- Union Mundial pro Interlingua
- Unique molecular identifier
- United States Minor Outlying Islands
- University Microfilms International
- Urban Ministries
- Ursa Minor