The current study investigated the influence of social exclusion, created through the Cyberball paradigm, on cognitive control using neural and behavioral measures of action monitoring. Healthy young adults performed a modified flanker task while their post-error behavior (accuracy, RT) and error-related negativity (ERN) were assessed. Results indicated that excluded participants showed decreased ERN and post-error response accuracy compared to included participants following their social interactions. These findings suggest that a common neural framework may exist for cognitive control processes and that cognitive control allocated toward exclusion-related processing following exclusionary social interactions may disrupt the capability to support self-regulatory action monitoring.