This study determined the patterns of language choice in six domains among Thai-Sikh people in Bangkok. The relationship of patterns of language choice and other variables were also examined. Data were collected through a questionnaire survey from 40 participants of the Thai-Sikh residing in a Thai-Sikh’s residential area. The analysis was carried out using descriptive and inferential statistics. The results showed that Thai is used the most in various domains, while English is used in school domain and Punjabi in temple domain. The significant relationships between the patterns of language choice and gender, age and educational level were found.