QUI, or qui, may refer to:Queen's University of Ireland
Qui ?, an album by French-Armenian singer Charles Aznavour
Qui...?, a 1989 new beat hit single by the Brussels Sound Revolution, satirizing Belgian politician Paul Vandenboeynants.
Qui (band), an American independent rock band
Qui, Iran, a village in Zanjan Province, Iran
qui, the ISO 639-3 code for the Quileute language, spoken in Washington state, United States
QUI, the National Rail code for Quintrell Downs railway station, Cornwall, UK
Qui (Yellowjackets), an episode of the American TV series Yellowjackets