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 (spider), a genus of Chinese spiders
  • Dai (cryptocurrency), a cryptocurrency-backed stablecoin
  • DAI Personal Computer, an early home computer from Belgium
  • Mercedes-Benz Group's former Frankfurt Stock Exchange 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