| Castiglione Chiavarese | |
| Official Name: | Comune di Castiglione Chiavarese |
| Native Name: | O Castiggion |
| Coordinates: | 44.2833°N 40°W |
| Region: | Liguria |
| Metropolitan City: | Genoa (GE) |
| Frazioni: | Campegli, Casali, Conio,Fiume, Casa del Monte, Masso, Mereta, Missano, San Pietro Frascati, Velva, Velva Santuario |
| Mayor: | Fausto Figone |
| Area Total Km2: | 30.1 |
| Population Footnotes: | [1] |
| Population Total: | 1591 |
| Population As Of: | 30 June 2017 |
| Population Demonym: | Castiglionesi |
| Elevation M: | 271 |
| Postal Code: | 16030 |
| Area Code: | 0185 |
Castiglione Chiavarese (pronounced as /u kastiˈdʒuŋ/) is a comune (municipality) in the Metropolitan City of Genoa in the Italian region Liguria, located about 50km (30miles) southeast of Genoa.
Castiglione Chiavarese borders the following municipalities: Carro, Casarza Ligure, Deiva Marina, Maissana, Moneglia.
In ancient times the area of Castiglione probably marked the border between the Ligurian and the Etruscan cultures. the modern frazione of Velva was a Roman municipium during Trajan's reign.
The Val Petronio was colonized by Benedictine monks after the fall of the Western Roman Empire; later it became a possession of the Fieschi family who, in 1276, sold Castiglione to the Republic of Genoa. In 1747, the latter built here a series of fortifications against the Austrians. In 1815, after a short Napoleonic rule, it was acquired by the Kingdom of Sardinia-Piedmont, becoming part of the newly unified Kingdom of Italy in 1861.
Castiglione Chiavarese is located across the SS523 State Road connecting it to Sestri Levante, which also houses the nearest railway station.