UJ may refer to:
Education University of Jaffna, Sri Lanka Jagiellonian University, Poland University of Jamestown, North Dakota, US University of Johannesburg, South Africa University of Jordan, Jordan University of Judaism, California, US
People Og (or 'Ūj), a biblical king UJ Seuteni, Samoan rugby player
Other uses Awj, a Syrian village near Hama, sometimes spelled Uj Microjoule (μJ, sometimes uj), a unit of energy , a Hungarian-language Zionist Jewish Newspaper Union Jack or Union Flag, of the United Kingdom Universal joint, a mechanical coupling
Utah Jazz