This study investigated the associations between peer bullying, Theory of Mind (ToM), alexithymia, and empathy in 87 juvenile delinquents versus 54 controls. Delinquents exhibited significantly lower ToM abilities (p < .001), though global empathy and alexithymia levels were comparable to controls. However, intra-group analysis revealed that delinquents involved in bullying possessed significantly poorer ToM (p = .034) and lower emotional empathy (p = .036) than non-bullies. Additionally, alexithymia was linked to weaker cognitive empathy. While global deficits didn't distinguish groups, specific ToM and emotional empathy impairments characterize bullying behavior among delinquents. These findings highlight the need for targeted interventions focusing on social-cognitive skills.