Variation in how individuals experience and express anger has been linked to their attachment style, particularly in close interpersonal contexts. However, little research has investigated attachment-related differences in anger and aggression in non-relational settings. This multi-method investigation reports two studies. The first investigated associations between adult attachment dimensions (anxiety and avoidance) in 270 participants. The second describes a lab-based anger provocation task, based on a modified version of the Taylor Aggression Paradigm, which examined associations between attachment dimensions and pre-post test change in self-reported anger, physiological responses, anger suppression and aggressive responding (N = 77). Results from study 1 indicate that attachment anxiety was a significant independent predictor of trait anger, while attachment avoidance was not. There were no significant interaction effects, suggesting distinct effects of attachment dimensions on anger. In study 2, attachment avoidance was negatively related to anger change scores from baseline to post-provocation and positively to anger suppression (measured by the discrepancy between self-report and physiological measures). Attachment anxiety was positively associated with aggressive responding. In summary, the findings support the high arousal-low control style previously associated with attachment anxiety, evidenced by elevated trait anger and higher aggressive responding. They also align with previous studies that support an association between attachment avoidance and emotion suppression, suggesting that the attachment framework can be usefully extended to understand anger and aggression in non-relational contexts.