This article examines play as a conceptual third space that serves as a bridge between home and school discourses. Using sociocultural theories and an interpretivist framework, 19 immigrant mothers and their children in Canada were interviewed about their play experiences at home and in preschools. The findings reveal that children and teachers utilise play as third space in various ways. Although there is some cultural dissonance experienced by children, this study illustrates ways that children use play as a bridge between home and school and explores strategies that teachers use in supporting children's use of play as third space. As children navigate these two cultural sites, they accumulate funds of knowledge and life experiences, which then meet, interact and perhaps fuse together in the conceptual third space. The conclusion proposes that 'play as third space' can be used as a conceptual framework for educators and practitioners to support children's transition from home to school and assist children who experience discontinuities.