Wilier Triestina (Italian pronunciation: [‘viljɛr tries’ti:na]) is an Italian manufacturer of racing bicycles, founded in 1906 by Pietro Dal Molin in Bassano del Grappa, Italy.

Wilier Triestina started in a modest workshop on the banks of the river Brenta in San Fortunato by Pietro Dal Molin from Bassano del Grappa, Italy, in the summer of 1906.

[1] The company name originated as an acronym for the phrase “W l’Italia liberata e redenta”, where the W is an abbreviation for "Viva!

When Wilier was founded, Trieste was not part of Italy; the name 'Wilier Triestina' reflected a patriotic desire for it to be rejoined.

[6] Marco Pantani rode the 1997 Tour de France on a Wilier.