JU may mean:
- Jadavpur University, a leading university of India
- Jacksonville University, a university in Jacksonville, Florida
- Jat Airways: IATA airline designator
- Juan de Nova Island: FIPS PUB 10-4 territory code
- Junge Union, a German political youth organisation
Ju may mean:
- A common Chinese surname
- Junkers, a German aircraft manufacturer
- Canton of Jura, Switzerland
- Zhou (political division) and Provinces of Korea, ancient political divisions of Korea.
- The Principle of Ju, a philosophical concept in martial arts.
- Korean wine (hangul: 주; hanja: 酒)
