Jastarnia [jasˈtarɲa] (Kashubian: Jastarniô, German: Heisternest) is a small town in Puck County, Pomeranian Voivodship, northern Poland. It is located on the Hel Peninsula on the Baltic Sea. Popular Polish seaside resort and small fishing port.
The municipal commune of Jastarnia consists of 3 districts: Jastarnia, Kuźnica, Jurata.
Twin towns — Sister cities
Jastarnia is twinned with: Wisła, Wałbrzych, Elbe-Parey, Baabe
Coordinates: 54°42′N 18°40′E / 54.700°N 18.667°E