Diano d'Alba is a comune (municipality) in the Province of Cuneo in the Italian region Piedmont, located about southeast of Turin and about northeast of Cuneo.
Diano d'Alba borders the following municipalities: Alba, Benevello, Grinzane Cavour, Montelupo Albese, Rodello and Serralunga d'Alba.
Diano d'Alba is twinned with: