Camignolo is a former municipality in the district of Lugano in the canton of Ticino in Switzerland . The municipalities of Medeglia , Bironico , Camignolo, Rivera and Sigirino merged on 21 November 2010 into the new municipality of Monteceneri .

Camignolo is first mentioned in 1296 as Camigiollo. In the Middle Ages Camignolo appears as part of the parish of Bironico and valley community of Valle Carvina. Como Cathedral had properties in the village. San Ambrogio castle is mentioned in 1348.