Arbedo-Castione is a municipality in the district of Bellinzona in the canton of Ticino in Switzerland .

Arbedo-Castione has an area, as of 1997, of 21.28 square kilometers (8.22 sq mi). Of this area, 1.27 km2 (0.49 sq mi) or 6.0% is used for agricultural purposes, while 16.51 km2 (6.37 sq mi) or 77.6% is forested. Of the rest of the land, 1.88 km2 (0.73 sq mi) or 8.8% is settled (buildings or roads), 0.39 km2 (0.15 sq mi) or 1.8% is either rivers or lakes and 0.86 km2 (0.33 sq mi) or 4.0% is unproductive land.

Of the built up area, industrial buildings made up 1.8% of the total area while housing and buildings made up 2.9% and transportation infrastructure made up 2.8%. Power and water infrastructure as well as other special developed areas made up 1.3% of the area.