General Kazimierz Sosnkowski Municipal Stadium

The General Kazimierz Sosnkowski Municipal Stadium or Polonia Warsaw Stadium, known colloquially as K6, is a multi-purpose stadium in Warsaw, Poland.

It is currently used mostly for football matches, and is the home ground of Polonia Warsaw. The stadium was originally built in 1928. The East stand was thoroughly modernized in 2004.

The stadium was used as a training ground for UEFA Euro 2012, and is being upgraded to hold a larger audience. It currently holds 6,852 seats, subdivided as follows.