Costalpino
Frazione
Costalpino Location of Costalpino in Italy
Coordinates: 43°17′30″N 11°18′15″E / 43.29167°N 11.30417°E / 43.29167; 11.30417
Country	Italy
Region	Tuscany
Province	Siena (SI)
Comune	Siena
Elevation	270 m (890 ft)
Time zone	UTC+1 (CET)
• Summer (DST)	UTC+2 (CEST)

Costalpino is a village in Tuscany, central Italy, in the comune of Siena, province of Siena.

It is located about 5 km south-west of Siena. Renaissance painter Marco Pino was born in Costalpino in 1521.

• Emanuele Repetti (1841). "Costalpino". Dizionario geografico fisico storico della Toscana. Vol. 4. Florence. pp. 266–267.