Piero de' Bardi

Piero di Gualtieri de' Bardi (c. 1290–1345) was a Florentine knight, magnate and partner in the Bardi banking company. He bought the county of Vernio in 1332.

He led the magnate conspiracy against Florence's popular government, uncovered in 1340; denounced by his brother Andrea, he was exiled and condemned to death, and the Republic bought Vernio in 1341. Restored under Walter of Brienne in 1342, he helped expel the Duke in 1343, then fled to Vernio, where he died suddenly in 1345.