DNG can have the following meanings:
- Digital Negative, also known as "Adobe DNG" and "Adobe Digital Negative", (a digital photography raw image format owned by Adobe)
- Delaware National Guard
- Negative index metamaterials, also known as double negative metamaterials, materials in which both permittivity and magnetic permeability are less than zero. They are a class of Electromagnetic metamaterials.
- Degrassi: The Next Generation, a Canadian television series