This study examined kindergarten teachers' behavioural intentions to implement play-based learning and its relationship to two types of facilitating factors: organisational (i.e., instructional leadership and trust in colleagues) and individual (i.e., teacher self-efficacy). Structural equation modelling examining the direct and mediating effects was conducted on data collected from 542 Hong Kong kindergarten teachers. The results showed that principal instructional leadership was positively associated with teachers' intentions to implement play-based learning directly and indirectly through trust in colleagues and teacher self-efficacy. Teachers with higher efficacious beliefs showed more active intentions to implement play-based learning. These findings highlight the importance of creating conducive organisational conditions and enhancing teacher self-efficacy for the implementation of play-based learning in kindergartens.