Fiera di Primiero

Fiera di Primiero () was a "comune" (municipality) in Trentino in the northern Italian region Trentino-Alto Adige/Südtirol, located about east of Trento. It was merged with Siror, Tonadico and Transacqua on January 1, 2016, to form a new municipality, Primiero San Martino di Castrozza.
With an area of , Fiera di Primiero was one of the smallest municipalities in land area in Italy.