The text presents a scheme of critical thinking (CT) and metacognition (MC). It starts by sketching concepts of these two aspects and the lack of clarity that exists when developing them. The purpose of this document is to contribute to clarify the conceptual interaction of CT and MC through a bibliographic review of scientific articles. To this end, the framework for the development of metacognitive skills (MS) and the integrated model of critical thinking were studied. The authors concluded that CT is a metacognitive process that facilitates the individual's interpretation of cognitive information and that the adequate development of CT requires MS.