Sas () is a hill in the Waà Âbrzych Highlands, a foothill region of the Central Sudetes, in south-western Poland. At a height of , it is regarded as the highest summit of the Waà Âbrzych Highlands.
Sas is an officially named summit in the municipality of Stare Bogaczowice, in Waà Âbrzych County, Lower Silesian Voivodeship. The hill rises above Struga, on the route towards Szczawno-Zdrój.
Although no marked hiking trail leads directly to the top, the summit can be reached in a few minutes from the nearby blue trail. The forest edge near the summit provides views across the Waà Âbrzych Highlands.
The slopes below Sas were part of the terrain associated with the fighting at the Battle of Struga between Poles and Prussians on 15 May 1807. According to Waà Âbrzych County's historical description of the battle, Prussian forces deployed on ground connected with Sas and the neighbouring Red Hill above the road between Struga and Szczawno-Zdrój.