Plazac (French pronunciation: [plazak]; Occitan: Plasac) is a commune in the Dordogne department in Nouvelle-Aquitaine in southwestern France.

It is near the village of Les Eyzies and the city of Sarlat-la-Canéda.

The bishops of Périgueux built a fortified residence in Plazac in the 12th-13th century.

Its donjon was transformed into a bell tower in the 17th century.

[3] During World War II, Plazac sheltered the residents of Bootzheim (Alsace) who were evacuated.