Yiwu () is a town in Mengla County, Xishuangbanna Dai Autonomous Prefecture, Yunnan province, China, bordering Laos's Phôngsali to the east.
Yiwu was established as a township in 1988. It merged Manla Township () on 30 September 2004, and was re-organized as a town in January 2015.
thumb|right|The dirt highway, one of the two streets in the village, running north–south through Xinzhai village, Yiwu. The only road apart from the highway runs to the border.(November 2004)
thumb|right|The township sign of Xinzhai village, Yiwu, in Dai and Chinese scripts. (November 2004)