- DIAC stands for Department of Immigration and Citizenship (Australia)
- DIAC stands for Dubai International Academic City (United Arab Emirates)
- DIAC stands for Dubai International Arbitration Centre (United Arab Emirates)
- DIAC stands for Defense Intelligence Analysis Center
- DIAC stands for Dedicated Inquiry Access Code (Bluetooth)
- DIAC stands for Diode for Alternative Current (electricity)
- DIAC stands for Defense Industry Advisory Council
- DIAC stands for Data Interpretation Analysis Center
- DIAC stands for Durham Integrated Arts Camp
DIAC