波尔托新堡（意大利语：Castelnuovo di Porto）是意大利拉齐奥大区罗马省的一个镇，面积30.8平方公里，人口7,851人（2004年）。

Castelnuovo di Porto is a comune (municipality) in the Province of Rome in the Italian region Latium, located about 25 kilometres (16 mi) north of Rome.

The genealogical research of all of the ancestors and descendants of Castelnuovo di Porto is done by: Mr. Richard Falzini.