This study investigated the validity and reliability of the Turkish version of the Metacognitive Awareness Inventory. The sample of the study consisted of 607 university students. Results of language equivalence indicated that the correlations between Turkish and English forms of the MAI were quite high (r = 0.93). As a result of a series of factor analyses eight subscales have emerged under the knowledge and regulation of cognition. These subscales were declarative knowledge, procedural knowledge, conditional knowledge, planning, monitoring, evaluation, debugging, and information management. The internal consistency of the entire inventory was 0.95. The item-total correlations ranged from 0.35 to 0.65 and test-retest reliability coefficient was 0.95. According to these findings, the Metacognitive Awareness Inventory is a valid and reliable instrument that can be used in the field of education.