It is widely accepted that children in Scotland, as in other high-income countries, are not engaging in sufficient moderate-to-vigorous intensity physical activity (MVPA), the consequences of which can be adverse for health and wellbeing. In this paper, it is contended that active play (a form of gross motor or total body movement in which children exert energy in a freely chosen, fun, and unstructured manner) has potential to redress this deficit in MVPA. This paper reflects on lessons learned from active play interventions in Scottish schools, providing recommendations for schools on how to encourage more active play. It is argued that promoting active play during school break times and in the after-school period, and participating in active play interventions are promising ways of increasing children's MVPA and improving their fundamental movement skills.