| Casnigo | |
| Official Name: | Comune di Casnigo |
| Coordinates: | 45.8167°N 61°W |
| Region: | Lombardy |
| Province: | Bergamo (BG) |
| Frazioni: | Barbata, Colle Bondo, Grumello, Mele, Ronco Trinità, Serio |
| Mayor: | Enzo Poli |
| Area Total Km2: | 13.62 |
| Population Footnotes: | [1] |
| Population Total: | 3237 |
| Population As Of: | 30 April 2017 |
| Population Demonym: | Casnighesi |
| Elevation M: | 514 |
| Postal Code: | 24020 |
| Area Code: | 035 |
Casnigo (Bergamasque: Casnìgh) is a comune (municipality) in the Province of Bergamo in the Italian region of Lombardy, located about 70km (40miles) northeast of Milan and about 20km (10miles) northeast of Bergamo.
Casnigo borders the following municipalities: Gandino, Cazzano Sant'Andrea, Vertova, Colzate, Ponte Nossa, Cene, Gorno, Fiorano al Serio.
The city council of Casnigo has claimed the title "homeland of the Baghèt"[2] (the Lombardy bagpipe), as the last traditional player of the instrument was the local Giacomo Ruggeri Casnigo (1905–1990).