Koà Âcielisko is a village in Tatra County, Lesser Poland Voivodeship, in southern Poland, close to the border with Slovakia. (It was previously in Nowy Sàcz Voivodeship from 1975 to 1998.) It is the seat of the gmina (administrative district) called Gmina Koà Âcielisko.
In 2006 the village had a population of 3,900.
The Biathlon Junior World Championships 2003 was held in Koà Âcielisko, Poland from February 5 to February 9, 2003.
Koà Âcielisko is twinned with: