Gargnano (Gardesano: Gargnà) is a town and comune (municipality) in the province of Brescia, in Lombardy, Italy.

The municipal territory includes the artificial Valvestino Lake, created in 1962.

The name of the village appears for the first time in a document of 937 as Garniano, perhaps derived from the Latin stem Garenius.

Passages of the Roman historian Titus Livius and inscriptions on headstones testify to the presence of Etruscans, Celts, Cenomani and Romans.

[4] In 1866 Gargnano was bombarded by the Austrian navy during the fighting on Lake Garda which formed part of the Third Italian War of Independence.