Warszawa Land

Warszawa Land (Polish: ziemia warszawska), named after Warsaw (Polish: Warszawa), was an administrative unit (ziemia) of the Duchy of Mazovia, Kingdom of Poland and the Polish-Lithuanian Commonwealth. With its capital in Warsaw, it belonged to Masovian Voivodeship. Warszawa Land was divided into three counties: Warszawa, Tarczyn and Blonie.

The boundaries of Warszawa Land were established in the 14th century, and remained unchanged until the Partitions of Poland. Its total area was 2860 km², and in the 16th century, its southwestern corner was densely populated by poor szlachtas. Warsaw was located in the middle of the province.