Baid or BAID may refer to:
- Barrow Area Information Database, a database supporting arctic science
- Beaux-Arts Institute of Design, a former art and architecture school in New York City
- The BioAssay identification number, an identifying number for chemical compounds used by the PubChem database
- Chandan Mal Baid, a leader of the Indian National Congress
This disambiguation page lists articles associated with the title Baid.
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