Wenxi County (simplified Chinese: 闻喜县; traditional Chinese: 聞喜縣; pinyin: Wénxǐ Xiàn) is a county in southwestern Shanxi province, China.

The name Wenxi, which means "hearing the glad news", was used as the county name in 111 BC when Emperor Wu of Han, who on his royal progress at this place, heard Han's decisive victory in the Han–Nanyue War.

In June 2022, archaeologists announced a discovery of a 2.8 centimetres (1.1 in) long, 5,200-year-old stone carving chrysalis in a semi-crypt house at the Shangguo Site in the city of Yuncheng, Wenxi County.

Archaeologists theorised that this house may have belonged to the Yangshao culture period, based on the unearthed pottery pieces.

According to archaeologist Tian Jianwen, discovery of stone carving chrysalises provided significant information for the study of the silkworm culture and sericulture in China.