Countries Inside Italy? None – But Two Enclaves Within

No sovereign countries exist inside Italy's territory. However, Italy completely surrounds two independent microstates—making them enclaves.

The Two Enclaves

State	Area	Population	Status	Key Facts
Vatican City (Holy See)	0.44 km² (0.17 sq mi)	~800	Sovereign city-state; spiritual center of Catholicism	Pope = head of state; own mint, post, media, UN observer; within Rome
San Marino	61 km² (24 sq mi)	~33,000	World's oldest republic (301 CE); not EU (uses €)	Mt. Titano; 9 castles; own calendar, stamps, football team; near Rimini

Italy shares land borders with 6 countries (not inside):

Enclaves feel "inside" Italy geographically.
Campione d'Italia is an Italian exclave in Switzerland (Lake Lugano) – reverse situation.
Historical: Italy unified 1861; these two entities retained sovereignty by treaty.