This aim in this study was to examine self-injurious behaviour in terms of coping with stress and emotional regulation. The study sample included 527 students who volunteered for the study: 278 females (52.7%) and 249 males (47.2%) from six high schools. Permission was obtained from the high schools in the city centre of Trabzon, Turkey, for data collection, which was carried out using the Inventory of Statements about Self-injury, the Ways of Coping Inventory, the Emotional Regulation Scale, and a Personal Information Form. The results revealed significant correlations between self-injurious behaviour, coping with stress and emotional regulation. Self-injurious behaviour, rather than gender, is a significant predictor of emotional regulation and coping with stress.