Calais /ˈkælɪs/ is a town in Washington County, Vermont, United States.

Colonel Jacob Davis named Calais after the French port city of the same name, during a time of general enthusiasm for things French as a result of France's aid during the American Revolution.

[4] The Wheelocks and Parkers were the first families to settle the town, in the latter part of the 18th century.

In the early and mid 19th century, the Vermont wool industry spawned sheep pastures in the town.

In 1905, the residents petitioned the state legislature to change the name to Adamant, chosen to suggest the hardness of granite.

The missionary sent some Chinese wheat back to Vermont, the farmer planted it, and it flourished.

24.0% of all households were made up of individuals, and 6.8% had someone living alone who was 65 years of age or older.