Tampuan (IPA: [təmpṳan], Khmer: ទំពួន) is the language of Tampuan people indigenous to the mountainous regions of Ratanakiri Province in Cambodia. As of the 2008 census there were 31,000 speakers, which amounts to 21% of the province's population. It is closely related to Bahnar and Alak, the three of which form the Central Bahnaric language grouping within the Mon-Khmer language family according to traditional classification.