莱尼亚诺（意大利语：Legnano）是位于意大利北部伦巴第大区西北部的一个城市。2007年，莱尼亚诺有人口56,751人。莱尼亚诺属米兰省管辖。

Legnano [leɲˈɲaːno] (Lombard:Legnan) is an Italian town and comune with 60,313 inhabitants in the north-westernmost part of the Metropolitan City of Milan, about 20 kilometres (12 mi) from downtown Milan. It is crossed by the river Olona, and it is the 13th town for inhabitants in Lombardy.