Park Stawy Kellera, Urban park in Bielany district, Warsaw, Poland.

Park Stawy Kellera is an urban park in Warsaw's Bielany district featuring two large ponds connected by a small cascade. A metal bridge decorated with circular patterns crosses the waterway and links the different areas of the space.

The park traces its origins to the 17th-century palace grounds of Marysieńka Sobieska at Marymont. In 1908 Emil Keller bought the plot at Gdańska 33 and built a dye works that ran until 1937; Stefan Norblin then acquired the property and converted part of the factory into the Kaskada villa. After 1945 the ruins were demolished and a small park was created, long neglected until the present name was given in 2010.

The park takes its name from Emil Keller, who bought the plot at Gdańska 33 in 1908 and ran a dye works there until the end of 1937. The name Kaskada, used for the surrounding settlement, comes from the Gospoda Na Cztery Fajerki inn founded at the pond-side manor of General Józef Rautenstrauch. A boulder with a plaque in the park commemorates Stefan Norblin and actress Lena Żelichowska, who lived in the villa "Kaskada"; their ashes were brought back to Poland in 2012.

The park lies between Gdańska and Kolektorska streets in the Marymont-Kaskada housing estate, with the Keller ponds at its centre. Paths run along the water, so the two ponds and the small cascade can be seen on foot. The ground by the ponds is low and can be soft after rain.

In 2012, on the 60th anniversary of Stefan Norblin's death and the 120th of his birth, the ashes of Norblin and his wife, actress Lena Żelichowska, were brought back to Poland and a boulder with a plaque was unveiled in the park. During the Warsaw Uprising, insurgents of the "Żubr" group took this area on 1 September 1944 and found about 40 tonnes of rapeseed oil in the warehouses, which they distributed to residents.