•
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