Although there is an abundance of quantitative studies on teachers' technology acceptance, qualitative research on this topic is sparse, especially in the Thai context. This study thus set out to explore the acceptance of technology among Thai EFL university teachers. The study adopted the Technology Acceptance Model (TAM) as the basis for its framework, and in-depth interviews were employed to collect qualitative data from eight participants. The analysis of the interview data revealed that the teachers' behavioral intentions to use technology (BI) were influenced by six factors: perceived usefulness (PU), perceived ease of use (PEU), attitude towards use (ATT), subjective norm (SN), facilitating conditions (FC), and familiarity with technology. This study provides insights into the determiners of technology acceptance among Thai EFL university teachers, which are critical to the promotion of technology integration in this country.