- DTAC stands for Double Taxation Avoidance Convention (Mauritius and India)
- DTAC stands for Defensive Tactics (military and police training)
- DTAC stands for Disaster Technical Assistance Center (US SAMHSA)
- DTAC stands for Division Tactical
- DTAC stands for Delta Teaching Assistant Certificate (Canada)
- DTAC stands for Dialogue Transatlantique des Consommateurs (French: Transatlantic Consumer Dialogue)
- DTAC stands for Danvers Traffic Advisory Committee (Danvers, MA)
- DTAC stands for Digitized Training Access Center
- DTAC stands for Deployable Testbed for Autonomic Computing
- DTAC stands for Department of Tactics
DTAC