Background: In the current study, we aimed to test a metacognitive model of self-esteem grounded in the Self-Regulatory Executive Function model of psychopathology. Method: A convenience sample of 346 community participants were recruited and completed a battery of online questionnaires that measured self-esteem, self-criticism, self-critical rumination, metacognitions about self-critical rumination, generic metacognitions and negative affect. Initially, we tested a series of hypotheses to establish the relationships between the study variables. We then examined whether self-critical rumination, and its associated metacognitions, both positive and negative, would independently predict self-esteem when controlling for age, negative affect, levels of self-criticism and generic metacognitions. Results: Self-critical rumination and its associated negative metacognitions, levels of depression and self-criticism independently predicted self-esteem. Additionally, a path analysis revealed that the study data was a very good fit to the proposed metacognitive model of self-esteem. Conclusion: The metacognitive model of self-esteem presented in this paper may be used to generate novel interventions to improve self-esteem and decrease self-critical rumination