The District Museum Building in Bydgoszcz is an historical building in Bydgoszcz located at 4 Gdańska Street.

Gdańska Street is one of the main streets of downtown Bydgoszcz, Poland. Initially, the street was a thoroughfare, but in the second half of the 19th century, it turned residential. It ran from the Brda river to Bydgoszcz northern part of town and has gradually become the city center of trade and entertainment. During the interwar period, Gdańska street was the third longest street in Bydgoszcz with a total length of 3.19 km.