- ZDT stands for Zero Dark Thirty (film)
- ZDT stands for Zhongwen Development Tool (open source tool)
- ZDT stands for Zinc Dithiophosphate (lubricant; Castrol)
- ZDT stands for Zimbabwe Democracy Trust
- ZDT stands for Z-Direction Tensile (paper industry)
- ZDT stands for Zero Day Threat (cybercrime book)
- ZDT stands for Zero-Ductility Transition
ZDT