Language practices and attitudes among young minority language speakers in Thailand, focusing on the Kui language, are examined. Sociolinguistic data obtained from three months of fieldwork in the northeastern provinces of Surin, Sisaket and Ubon Ratchathani and in Bangkok provide insights into the language competence, language attitudes and linguistic awareness of young Kui speakers. We found that young speakers use language differently in various settings. Males and females use minority and majority languages differently and with varying confidence. Internal and external motivations such as language prestige and identity condition may foretell the future of the Kui language in Thailand. The dynamics of minority language use and the preservation and transmission of threatened and shifting languages are highlighted. This study reveals the current speaking preferences of young Kui speakers and allows for predictions regarding their prospective short- and long-term language use.