Sadowo Pierwsze [saˈdɔvɔ ˈpjɛrfʂɛ] is a settlement in the administrative district of Gmina Malbork, within Malbork County, Pomeranian Voivodeship, in northern Poland. It lies approximately 7 kilometres (4 mi) north-east of Malbork and 47 km (29 mi) south-east of the regional capital Gdańsk.

For the history of the region, see History of Pomerania.