Greater Poland Voivodeship (in Polish, województwo wielkopolskie ), also known as Wielkopolska Voivodeship or Wielkopolska Province, is a voivodeship, or province, in west-central Poland. It was created on 1 January 1999 out of the former Poznań, Kalisz, Konin, Piła and Leszno Voivodeships, pursuant to the Polish local government reforms adopted in 1998. The province is named after the region called Greater Poland or Wielkopolska . The modern province includes most of this historic region, except for some south-western parts.
Greater Poland Voivodeship is second in area and third in population among Poland's sixteen voivodeships, with an area of and a population of close to 3.4 million. Its capital city is Poznań; other important cities include Kalisz, Konin, Piła, Ostrów Wielkopolski and Gniezno (an early capital of Poland). It is bordered by seven other voivodeships: West Pomeranian to the northwest, Pomeranian to the north, Kuyavian-Pomeranian to the north-east, Łódź to the south-east, Opole to the south, Lower Silesian to the southwest and Lubusz to the west.