Trivero (Piedmontese: Tarvè) was a comune (municipality) in the Province of Biella in the Italian region Piedmont, located about 80 kilometres (50 mi) northeast of Turin and about 14 kilometres (9 mi) northeast of Biella.

Trivero bordered the following municipalities: Camandona, Caprile, Crevacuore, Curino, Mezzana Mortigliengo, Mosso, Portula, Pray, Scopello, Soprana, Strona, Vallanzengo, Valle Mosso, Valle San Nicolao.

As a comune it had the following frazioni (villages): Pratrivero, Ponzone, Cereje, Polto, Barbero, Sella, Lora, Guala, Ronco, Mazza, Mazzucco, Vaudano, Botto, Pramorisio, Piana, Castello, Fila, Dosso, Grillero, Pellizaro, Vico, Oro, Ferrero, Gioia, Roveglio, Villaggio Residenziale, Bellavista, Caulera, Stavello, Barbato, S. Antonio, Barozzo, Marone Bulliana, Giardino

Trivero is an important centre of the wool industry. The Italian fashion companies Ermenegildo Zegna and Loro Piana were born in Trivero.

From 1 January 2019 Trivero was absorbed by the new-born municipality of Valdilana.

• Nostra Signora della Brughiera