Radiowo is a neighbourhood, and a City Information System area, in Warsaw, Poland, located within the district of Bielany.

In Polish language gać is an archaic term, meaning a material used in isolating house walls.

[3][5] In March 1938, the population of Gać voted in unanimity to change the name of the village to Radiowo, which could be loosely translated from Polish to Radioville.

One of main reasons of the name change, was a close resemblance of Gać to word gacie which in Polish means underwear.

[2] The village of Gać, located within the central portion of the present area of Radiowo, was founded in the 18th century, in the form of a linear settlement centred on Arkuszowa Street.

It is evident in its names recorded at the time, including Gorczewska Gaca in 1793, and Gać Górcowska in 1794, both referencing Górce.

[1] It borders Huta, Placówka, Wólka Węglowa to the north, Chomiczówka, and Wawrzyszew to the east, Lotnisko to the south, and the municipality of Izabelin.