Castelnuovo Bozzente (Comasco: ) is a comune (municipality) in the Province of Como in the Italian region of Lombardy, about northwest of Milan and southwest of Como. As of 31 December 2004, it had a population of 810 and an area of .
Castelnuovo Bozzente borders the following municipalities: Appiano Gentile, Beregazzo con Figliaro, Binago, Tradate, Venegono Inferiore.