Placidi
Placidi is the name of
- Mattia Placidi (* 1990), Italian diver
- Biagio Placidi (1814–1908), Italian politician
- Franciszek Placidi (1710–1782), architect
- Fabio Placidi , scientist
- Donatella Placidi , scientist
- Giuseppe Placidi , scientist
- Michel Placidi (* 1945), French civil engineer and bridge builder
- Palazzo de Placidi , palace in Italy
