塞尼斯（意大利语：Senis），是意大利奥里斯塔诺省的一个市镇。总面积16.05平方公里，人口490人，人口密度30.5人/平方公里（2009年）。ISTAT代码为095054。

Senis is a comune (municipality) in the Province of Oristano in the Italian region Sardinia, located about 70 kilometres (43 mi) north of Cagliari and about 30 kilometres (19 mi) southeast of Oristano. As of 31 December 2004, it had a population of 546 and an area of 16.0 square kilometres (6.2 sq mi).