- DIAT stands for Defence Institute of Advanced Technology (Pune, India)
- DIAT stands for Digital Infrared Audio Transmission (Sony)
- DIAT stands for Denso International Asia Co., Ltd
- DIAT stands for Dismounted Incident Analysis Team (US Army)
- DIAT stands for Dominant Introverted Abstract Thinker (Jung personality type indicator)
- DIAT stands for Dynamic IP (Internet Protocol) Address Translation
- DIAT stands for DCGS Integration Activation Team
DIAT