Guillaume Danet (1670 – 1732) was a Paris based French map publisher active in the early and middle parts of the 18th century. Danet was the son in law of the more famous cartographer and map publisher Nicolas De Fer. Along with his brother, Jacques-François Besnard Danet, Guillaume Danet took over De Fer's publishing business following De Fer's death in 1720. Following Danet's death his business was continued by his widow, Marguerite de Fer, until about 1746.