TDG
TDG may refer to:
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Businesses
- TDG Limited, a UK logistics and distribution company
- Traffic Design Group, a New Zealand consultancy
- TransDigm Group, NYSE ticker symbol
Law
- Transportation of Dangerous Goods Act, 1992, a Canadian law
Science
- Transient directing group in organic chemistry
- Thymine-DNA glycosylase, an enzyme
Others
- Tandag Airport's IATA code
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