Carmignano is a comune (municipality) in the province of Prato, part of the Italian region Tuscany.

Carmignano borders the following municipalities: Capraia e Limite, Lastra a Signa, Montelupo Fiorentino, Poggio a Caiano, Prato, Quarrata, Signa, Vinci.

The most important attraction of the town is the church of San Michele e San Francesco (12th century), which houses a Visitation by the Renaissance master Pontormo.

The 10th century Rocca ("Castle"), in the upper part of the town, is well preserved.

The frazione of Comeana is home to several Etruscan tombs (such as the Tumulus of Montefortini), while at Artimino is a Medicean villa.