Sebastian Kà Âosià Âski (born 4 August 1992, in Warsaw) is a Polish speed skater.
Kà Âosià Âski won the bronze medal in the Team sprint event at the 2018 European Speed Skating Championships in Kolomna together with Piotr Michalski and Artur Nogal. He is trained by Tuppu Nieminen, a retired Finnish speed skater.