| UUU | University Unions United (umbrealla organization of college trade unions) | 大学工会联合会(大学工会联合组织) |
| UUU | Unknown Unix User | 未知Unix用户 |
| UUU | Manumu, Papua New Guinea | 巴布亚新几内亚马努穆 |
| UUU | uridine triplet | 尿苷三联体 |
| UUU | uridylyl uridylyl uridine | 尿苷 |
| UUU | University Unitarian Universalist | 大学一元论普世主义者 |
| UUU | Unofficial Ultimate Ultros | 非官方终极Ultro |
| UUU | Unununium (element 111) | Ununum(元素111) |
| UUU | Ugueth Urtain Urbina (baseball player) | Ugueth Urtain Urbina(棒球运动员) |
| UUU | Uniface Underground (hacker site) | Uniface Underground(黑客网站) |