Bydgoszcz is a city in northern Poland, on the Brda and Vistula rivers.

With a city population of 348,190 (December 2019), and an urban agglomeration with more than 470,000 inhabitants, Bydgoszcz is the eighth-largest city in Poland. It has been the seat of Bydgoszcz County and the co-capital, with Torun, of the Kuyavian-Pomeranian Voivodeship since 1999. Prior to this, between 1947 and 1998, it was the capital of the Bydgoszcz Voivodeship, and before that, of the Pomeranian Voivodeship between 1945 and 1947. Located in the historical region of Kuyavia, it is its largest city.

The city is part of the Bydgoszcz–Torun metropolitan area, which totals over 850,000 inhabitants. Bydgoszcz is the seat of Casimir the Great University, University of Technology and Life Sciences and a conservatory, as well as the Medical College of Nicolaus Copernicus University in Torun. It also hosts the Pomeranian Philharmonic concert hall, the Opera Nova opera house, and Bydgoszcz Airport. Due to its location between the Vistula and Oder rivers, and the watercourse of the Bydgoszcz Canal, the city forms part of a water system connected via the Notec, Warta and Elbe with the Rhine and Rotterdam.

Bydgoszcz is an architecturally rich city, with neo-gothic, neo-baroque, neoclassicist, modernist and Art Nouveau styles present, for which it earned a nickname Little Berlin. The notable granaries on Mill Island and along the riverside belong to one of the most recognized timber-framed landmarks in Poland.