Dai

Dai may refer to:

Names

 * Dai (given name), a Welsh or Japanese masculine given name
 * Dai (surname) (戴), a Chinese surname
 * Bảo Đại (保大), Emperor of Vietnam from 1926 to 1945

Places and regimes

 * Dai Commandery, a commandery of the state of Zhao and in early imperial China
 * Dai County, in Xinzhou, Shanxi, China
 * Dai (Eighteen Kingdoms), a short-lived state during the Eighteen Kingdoms period in Chinese history
 * Dai (Han dynasty), a realm and title during the Han dynasty
 * Dai (Sixteen Kingdoms), a Xianbei-led dynastic state during the Sixteen Kingdoms era of Chinese history
 * Dai (Spring and Autumn period), a state during the Spring and Autumn period in Chinese history
 * Dai (Warring States period), a short-lived state during the Warring States period in Chinese history

People and language

 * Da'i al-Mutlaq, or Da'i, a type of religious leader in Islam
 * Da'i, person engaging in Dawah, the act of inviting people to Islam
 * Dai language (disambiguation)
 * Dai people, an ethnic minority of China
 * Dai (Yindu), or Daai Chin, an ethnic tribe of Chin, Myanmar

Other uses

 * Dai (cryptocurrency), a cryptocurrency-backed stablecoin
 * DAI Personal Computer, an early home computer from Belgium
 * Daimler AG's stock symbol
 * De Administrando Imperio, work written by the 10th-century Byzantine Emperor Constantine VII
 * Deutsches Archäologisches Institut, or German Archaeological Institute, an archaeological institute operated by the German ministry of foreign affairs
 * DAI Global, an international development firm
 * Diamond Aircraft Industries, an aircraft manufacturer
 * Diffuse axonal injury, a type of traumatic brain injury
 * Digital Author Identifier, a unique number for an author in the Dutch research system
 * Direct audio input, a port used in hearing aids and hearing instruments
 * Distributed artificial intelligence, a subfield of artificial intelligence
 * Do As Infinity, a Japanese band
 * Dragon Age: Inquisition, a video game by BioWare
 * Dynamic ARP Inspection, a security protocol