Passport validity
The source states no minimum passport validity.
Visa rules · Tourist entry
Entry rules for Monaco from its official sources, and every passport we have a page for.
Official sources
The source states no minimum passport validity.
Pick your passport for the full rule, its source quote and the check date.
A tag means a beach within 30 km, a peak of at least 1,000 m and 500 m above the city within 50 km, a place on a sea island smaller than 120,000 km², or a World Heritage site within 25 km.