Purpose ± The snacking habits of children can be a cause for concern. Little research has been undertaken on the snacking habits of Mauritian schoolchildren. This study was conducted to identify the popular snacks upper primary schoolchildren (8-12 year old) buy at school. It also aimed at determining the factors that influenced children's purchase of snacks. Design/methodology/approach ± Twelve primary schools were selected using stratified random sampling. Thirty children from each school were involved. Data collection methods included an interviewer-administered questionnaire and observation of schoolchildren's snacking habits during lunch-time. Canteen sellers were also interviewed to gather information about the most popular snacks and their cost. Findings ± Findings revealed that most of the popular snacks were high in sugar, fat, energy or salt. Snacking habit of schoolchildren was significantly associated with age and gender ( p < 0.05). Children's snacking habit seemed to be largely influenced by the cost of snacks, their taste and availability, and the amount of pocket money. Originality/value ± Previous studies on snacking habits have focused on lower primary schoolchildren (5-7 year old) and adolescents, while this study has focused on the upper primary schoolchildren (8-12 year old). The findings provide a sound basis for health and education authorities to develop a national policy on the sale of nutritious foods in primary school canteens.