Liptovský Ján (Slovak pronunciation: [ˈliptɔwskiː ˈjaːn]; Hungarian: Szentiván) is a spa village and municipality in Liptovský Mikuláš District in the Žilina Region of northern Slovakia.

Ján, "St. John" (Latin: Sanctus Johannes, Hungarian: Sz.-János, later Szent-Ivány), after the local church.

[5] Before the establishment of independent Czechoslovakia in 1918, Liptovský Ján was part of Liptó County within the Kingdom of Hungary.

The most popular is Teplica spring, also called Kaďa, it contains about 830 milligrams of sulfates per liter.

[6] The municipality lies at an altitude of 654 metres and covers an area of 67.774 km².