Mount Xiao or Mount Yao () is a range of mountains in western Henan, China north of the Luo River and south of Sanmenxia. Major peaks include QënggÃÂngfÃÂng (éÂÂå´Âå³°; 1903 m) and GuÃÂnyúnshÃÂn (å é²山; 1666 m).
The range is part of the Xiáo () historical region on the border of Hénán and ShÃÂnxë provinces in China. The area between Yáo and the strategic HángàPass was called Xiáohán ().
There is a dispute over the pronunciation of its name. According to one of the most authoritative Mandarin Chinese dictionaries, the Cihai (), xiáo should be yáo according to ancient pronunciation. However, other dictionaries such as Ciyuan (), Xënhuá ZìdiÃÂn, HànyàDàCÃÂdiÃÂn, and Xiàndài HànyàCÃÂdiÃÂn use the pronunciation of xiáo.