This study explores the prevalence of different types of bullying and victimisation among Greek pupils receiving special education support provision. Associations of these types with feelings of loneliness and perceived social efficacy for peer interactions are also examined. The sample consisted of 178 students of fifth and sixth primary school grades who participated in pull-out special education delivery programmes. Participants were found to be actively involved in both bullying and victimisation, with higher rates in victimisation. Statistically significant gender and disability differences in bullying and loneliness were identified. Both bullying and victimisation were associated with loneliness/social dissatisfaction, and self-efficacy for peer interactions. Moreover, our data provided evidence that bully/victims may be a distinct group in terms of their increased levels of loneliness. Results are discussed in terms of their implications for promoting children with special educational needs and disabilities social inclusion.