- DIN stands for Drug Identification Number
- DIN stands for Digital Input
- DIN stands for Dinar (Yugoslavian national currency)
- DIN stands for Data Input
- DIN stands for Do It Now (gaming/chat)
- DIN stands for Dissolved Inorganic Nitrogen
- DIN stands for Document Identification Number
- DIN stands for Development in Nigeria
- DIN stands for Deutsches Institut für Normung eV (German Institute for Standardization; similar to US ANSI)
- DIN stands for Donor Identification Number
- DIN stands for Director Identification Number (India)
- DIN stands for Division Ingénierie Nucléaire (French: Nuclear Engineering Division; Electricité de France)
- DIN stands for Doctors Independent Network
- DIN stands for Darned If I Know
- DIN stands for Defense Intelligence Network
- DIN stands for Data Identification Number