熊严（？ - 前828年），芈姓，熊氏，名严，熊勇之弟。主要活动于荆山（今南漳西北）及其西周，有子四人，长子伯霜，中子仲雪，次子叔堪，少子季徇。熊严十年（前828年）卒，长子伯霜代立，是为熊霜。

Xiong Yan (熊严, died 828 BC) was from 837 to 828 BC the 11th viscount of the state of Chu during the Western Zhou Dynasty of ancient China. Like other early Chu rulers, he held the hereditary noble rank of viscount first granted to his ancestor Xiong Yi by King Cheng of Zhou.

Xiong Yan's father was also named Xiong Yan (熊延, different in Chinese characters), who was succeeded as the ruler of Chu by his older son Xiong Yong. Xiong Yong died in 838 BC and the younger Xiong Yan succeeded his older brother.

Xiong Yan had four sons: Xiong Shuang (熊霜), Xiong Xue (熊雪), Xiong Kan (熊堪), and Xiong Xun (熊徇). When Xiong Yan died in 828 BC he was succeeded by his first son Xiong Shuang. However, when Xiong Shuang died six years later, Xiong Yan's three younger sons fought one another for the throne. The youngest son Xiong Xun was ultimately victorious and ascended the throne, while Xiong Xue was killed and Xiong Kan escaped to Pu (濮).