DDG may refer to:
- David de Gea, a Spanish footballer
- Dried distillers' grain, a cereal byproduct of the distillation process
- Hull classification symbol for U.S. Navy guided missile destroyers
- Drop Dead, Gorgeous, a post-hardcore band
- DuckDuckGo, an internet search engine
- Demographically Developing Group, an epidemiological term
- Dynamic Distribution Group on a Microsoft Exchange Server