Dai can mean:
Dawah Subway (restaurant) D.A.I. Dai County DAI Personal Computer Dai Davies (footballer) Distributed artificial intelligence APR Traffic police ARP spoofing Daikatana (sword) Dai Young (rugby footballer) German Archaeological Institute Sino-Japanese vocabulary Young Wizards Dai Davies (politician) State of Dai Diffuse axonal injury De Administrando Imperio Dai people Militsiya Ticker symbol Do As Infinity Hearing aid Diane Duane Automotive industry Daimler AG Frankfurt Stock Exchange Home computer Shanxi Cisco Systems David Chinese surname Mercedes-Benz New York Stock Exchange Ukraine Denmark United States