DET
- 14 Intelligence Company
- Coleman A. Young International Airport
- Dafydd Elis-Thomas
- Department of Education (New South Wales)
- Detection error tradeoff
- Determiner
- Detroit
- Detroit (Amtrak station)
- Detroit Lions
- Detroit Pistons
- Detroit Red Wings
- Detroit Tigers
- Diethyltryptamine
- Duolingo English Test
- It (poetry collection)
- Sports in Detroit