Duplín (Hungarian: Bányavölgy; Rusyn: Дуплін) is a village and municipality in Stropkov District in the 'Prešov Region of north-eastern Slovakia.

In historical records the village was first mentioned in 1379.

The municipality lies at an altitude of 197 metres and covers an area of 9.033 km². It has a population of about 452 people.

• Media related to Duplín at Wikimedia Commons
• Official website
• https://web.archive.org/web/20071217080336/http://www.statistics.sk/mosmis/eng/run.html