罗萨扎（意大利语：Rosazza），是意大利比耶拉省的一个市镇。总面积8平方公里，人口108人，人口密度13.5人/平方公里（2009年）。ISTAT代码为096055。

Rosazza is a comune (municipality) in the Province of Biella in the Italian region Piedmont, located about 70 kilometres (43 mi) northeast of Turin and about 15 kilometres (9 mi) northwest of Biella. As of 31 December 2004, it had a population of****and an area of 8.7 square kilometres (3.4 sq mi).