Posen-West Prussia

Infobox Former Subdivision
conventional_long_name = Posen-West Prussia
common_name = Posen-West Prussia
native_name = "Grenzmark Posen-Westpreußen"
subdivision = Province
nation = Prussia

---

---

image_map_caption = Posen-West Prussia (red), within the Free State of Prussia
capital = Schneidemühl
latd=|latm=|latNS=|longd=|longm=|longEW=
stat_area1= 7695
stat_year1 = 1925
stat_pop1 = 332400
p1 = Province of Posen
flag_p1 = Flagge Preußen - Provinz Posen.svg
p2 = West Prussia
flag_p2 = Flagge Preußen - Provinz Westpreußen.svg
s1 = Province of Pomerania
flag_s1 = Flagge_Fürstentümer_Schwarzburg.svg
s2 = Province of Brandenburg
flag_s2 = Flagge Preußen - Provinz Brandenburg.svg
s3 = Province of Silesia
flag_s3 = Flagge Preußen - Provinz Schlesien.svg
year_start = 1922
year_end = 1938
national_anthem=
political_subdiv = The border province of Posen-West Prussia ( _de. Grenzmark Posen-Westpreußen) was a province of the Free State of Prussia. The capital was Schneidemühl (Piła). The province had an area of 7,695 km², and was located within present-day Poland.

Posen-West Prussia was created in 1922 out of those parts of the provinces of Posen and the western parts of West Prussia that remained with the Weimar Republic after the end of World War I; the largest parts of these provinces had become parts of the Polish Republic according to the Treaty of Versailles.

Posen-West Prussia was dissolved in 1938, when its territory was divided between the provinces of Silesia, Pomerania, and Brandenburg.

Despite the name, the city of Posen (Poznań) was not part of this province.

Population

*1919: 326,900
*1925: 332,400
*1933: 470,600