Piwnice [pivˈnit͡sɛ] is a village in the administrative district of Gmina Łysomice, within Toruń County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 5 kilometres (3 mi) west of Łysomice and 8 km (5 mi) north-west of Toruń. It is located in the Chełmno Land in the historic region of Pomerania.
The village has a population of 300. It is the site of Piwnice radio observatory.