Rai

Rai or RAI may refer to:

Title of royalty and nobility

Rai (title), meaning 'king', equivalent to Rao or Roy, a princely title used by many Hindu rulers in India
Rai Bahadur, a noble title given during British Raj in India
Rai Sahib, a noble title given during British Raj in India

Raí (born 1965), Brazilian footballer
Raí (footballer, born 2002), full name Raí da Silva Pessanha, Brazilian footballer
Lady Rai (c. 1570/1560–1530 BC), ancient Egyptian woman, nursemaid to Queen Ahmose-Nefertari
Rai Benjamin (born 1997), American hurdler
Rai Marchán (born 1993), Spanish footballer
Rai Purdy (1910–1990), Canadian television director and producer
Rai Ragbir, Trinidad and Tobago politician
Rai Simons (born 1996), Bermudian footballer
Rai Thistlethwayte (born 1980), Australian musician
Rai Vloet (born 1995), Dutch footballer

Radioactive iodine uptake test, a diagnostic scan
Rai (unit), a traditional Thai unit of area
Rencontre Assyriologique Internationale, annual conference of The International Association for Assyriology
Root analogue dental implant
Royal Anthropological Institute of Great Britain and Ireland
Rural Access Index, an indicator developed by the World Bank to measure how well rural populations are connected

Rai (East Syrian Ecclesiastical Province), a metropolitan province of the Church of the East
Amsterdam RAI Exhibition and Convention Centre, an exhibition and convention Centre in Amsterdam
Rai language (disambiguation), a group of Sino-Tibetan languages
Rai stones, a currency used in Yap, Caroline Islands
Rai University, in Ahmedabad, Gujarat, India
Retailers Association of India, an Indian trade association
Reynolds American Inc., an American tobacco company
Rai (Thai: ร่าย), a Thai poetic form used in laws and chronicles
Rai dynasty (c. 416–644 CE), a Buddhist dynasty based in Sindh in modern Pakistan
List of storms named Rai, Tropical cyclones with this name
Regia Aeronautica Italiana, an air force of Kingdom of Italy