The purpose of this study was to explore how primary school children include or exclude their peers in play. Two primary schools in Armidale, New South Wales, Australia, participated in this project. Observations and interactional interviews were used to collect data, and a content analysis approach was used for data analysis. Results suggest that participants employed various strategies to exclude some of their peers from play. It was also established that exclusion may be utilised for purposes of establishing or maintaining friendships among children. Findings of this study have implications on the strategies adopted by adults seeking to promote inclusion in children's play.