| Claino con Osteno | |
| Official Name: | Comune di Claino con Osteno |
| Coordinates: | 46°N 14°W |
| Region: | Lombardy |
| Province: | Como (CO) |
| Frazioni: | Barclaino, Rescia, Righeggia, San Lucio |
| Mayor: | Alessandra De Bernardi |
| Area Total Km2: | 13.1 |
| Population Total: | 555 |
| Population As Of: | 31 March 2017[1] |
| Population Demonym: | Clainesi and Ostenesi |
| Elevation M: | 280 |
| Postal Code: | 22010 |
| Area Code: | 0344 |
Claino con Osteno (Comasco: Scin Osten pronounced as /ˌʃĩː uˈstẽː/) is a comune (municipality) in the Province of Como in the Italian region of Lombardy, located about 60km (40miles) north of Milan and about 20km (10miles) north of Como. It is a small comune on Lake Lugano, composed of a series of small frazioni (hamlets): the biggest ones (Claino and Osteno) have been chosen for the municipal name.
Claino con Osteno borders the following municipalities: Alta Valle Intelvi, Laino, Ponna, Porlezza, Valsolda.
Near Osteno is a site with numerous late-Jurassic fossils characterized by integral fossilization, including the Squaloraja polyspondyla.