Hostýn, Pilgrimage site and mountain in Chvalčov, Czech Republic.

Hostýn is a hill of paleogenic flysch sandstone in the Hostýn-Vsetín Mountains, rising to 735 m about 3 km southeast of Bystřice pod Hostýnem. Its lower summit at 718 m holds the Baroque Church of the Assumption of the Virgin Mary, built 1721–1748, with a Jesuit monastery added in 1887. A 240-step stairway links the spring below to the church.

The site was originally home to a fortification built by the Lusatian culture that stood for centuries. Later it developed into a major pilgrimage destination with the construction of the basilica.

The name Svatý Hostýn refers to the Marian pilgrimage held here, first recorded in 1665 by Bohuslav Balbín in Diva Montis Sancti. The legend tells that during the 13th-century Tatar raid, people hiding on the hill prayed to the Virgin Mary; a spring burst from the ground and a storm forced the Tatars to retreat. In August 1912 the main statue of the Virgin Mary was crowned with a golden crown blessed in Rome by Pius X, drawing an estimated 200,000 pilgrims within ten days.

Access to the basilica is via a long stairway that connects to a natural spring at the base. Several hiking trails of varying difficulty lead from the foot of the mountain to the summit.

The spring below the summit is linked to the 1241 Tatar raid: praying for water, the refugees saw it burst from the ground, and a storm drove the attackers off. A chapel was built over it in 1700, and a 240-step stairway to the basilica followed in 1909.