The Lakkia language (Chinese: 拉珈语; pinyin: Lājiāyǔ), also spelled Lakkja after its IPA transcription, is a Kra–Dai language spoken in Jinxiu Yao Autonomous County, Laibin, East-Central Guangxi, China.
Lakkia speakers are thought to have migrated from further east, possibly from the Biao-speaking areas of Northwestern Guangdong Province (L.-Thongkum 1992).
Additionally, Solnit (1988) classifies Biao and Lakkia together as part of a Biao–Lakkia branch that is coordinate to Kam-Sui.
However, L.-Thongkum (1992) considers Lakkia to be most closely related to the Tai branch, based on the large number of shared lexical items.
[3] Lakkia is notable for preserving many prefixes that have been lost in most other Kra-Dai languages, including prefixes (such as *k.-) in archaic Chinese loanwords that are crucial for the reconstruction of Old Chinese.