Rai or RAI may refer to:
Entertainment
- RAI, national public broadcasting company of Italy
- Rai Italia Radio, international broadcast radio service of Rai Internazionale
- Rai Südtirol (TV channel), a German language television channel
- Raï, folk music originating in Oran, Algeria and popular in France
- Rai (comics), fictional character in Valiant Comics
- Raï (1995 film), a 1995 French film directed by Thomas Gilou
- Rai (2016 film), Indian film about Muthappa Rai
People
- Rai (surname)
- Rai Bahadur or Rai Sahib, a noble title given during British Raj in India
- Rai (title), means king and is equivalent to Rao or Roy, a princely title used by many Hindu rulers in India
- Rai (ethnic group), in Nepal
- Rai dynasty (c. 416–644 CE), a Buddhist dynasty based in Sindh in modern Pakistan
- Rai Sikh, adherents of Sikh faith
- Raí (born 1965), Brazilian footballer
Places
- Rai (East Syrian Ecclesiastical Province), a metropolitan province of the Church of the East
- Rai, Orne, a commune of the Orne département, in France
- Rai, Sonipat, a village in Haryana, India
- Rai, South Khorasan, a village in South Khorasan Province, Iran
Transportation
- Réseau Aérien Interinsulaire, a former name of the airline Air Tahiti
- IATA airport code for Praia International Airport in Cape Verde
- Islamic Republic of Iran Railways
Other
- Rai (unit), a traditional Thai unit of area, equaling 1,600 m²
- Rai stones, a kind of stone currency used in Yap, Caroline Islands
- Rai languages, Dhanwar Rai language
- Rai or Raai, the Hindi name for mustard seed
- Rai (Thai: ร่าย), a Thai poetic form used in laws and chronicles
- Rai University, a university in India
- Royal Anthropological Institute of Great Britain and Ireland
- Radioactive iodine uptake test, RAI uptake test, a diagnostic scan