钖西安是亚美尼亚的城市，位于该国南部，距离首都叶里温217公里，由休尼克省负责管辖，面积36.7平方公里，最高点海拔高度1,600米，每年平均降雨量365毫米，2010年人口16,735。

For the town southwest of Sisian, formerly also called Sisian, see Hatsavan, Syunik.

Sisian (Armenian:Սիսիան), is a town in the southern Syunik Province of Armenia. It is located on Vorotan River, 6 km south of the Yerevan-Meghri highway, at a distance of 217 km from Yerevan and 115 km from Kapan.

Sisian was known as Sisakan, Sisian and Sisavan during the ancient times and later in the Middle Ages. However, the name Karakilisa which was used for the town by the Turkic rulers of Armenia, was kept until 1935.