Foreign nationals - that is non-EU citizens - may
enter Italy provided that they hold both a valid passport and, if required, an entry visa issued in their country of origin.
As soon as foreign nationals enter Italy they should apply for a residence permit based on the same motivations specified on their entry visa.
A residence permit is not required for business, tourism, short visits or study, provided that the stay does not exceed 3 months.
EU nationals do not need a residence permit to stay in Italy.