Pieniny National Park (Slovak: Pieninský národný park; abbr. PIENAP) is a national park in northern Slovakia. The park is located in the eastern Pieniny Mountains on the border with Poland. It is the smallest national park in Slovakia with an area of 37.49 km² (14.48 mi²) and a buffer zone of 224.44 km² (86.66 mi²). The park is located in the Slovak districts of Kežmarok and Stará Ľubovňa in the Prešov Region.