<p>Emotional regulation during childhood and adolescence is a critical competency closely linked to psychological adjustment and well-being. The Cognitive Emotion Regulation Questionnaire (CERQ) is one of the most widely utilized instruments for evaluating cognitive strategies of emotion regulation, and it has been adapted to multiple languages and cultural contexts. This systematic review aimed to analyse the psychometric quality, factor structure, and overall utility of the CERQ in young populations. A comprehensive search was conducted in SCOPUS, Web of Science, PubMed, PsycINFO, and ERIC using combined descriptors related to children, adolescents, the CERQ, and psychometric properties. Nineteen studies met the inclusion criteria. Most evidence supports the original nine-factor structure, with studies consistently reporting satisfactory internal consistency for both the total scale and its subscales. Additionally, convergent and discriminant validity, as well as test–retest reliability, were documented. Meta-analytic findings suggest a higher use of adaptive strategies such as Acceptance, Refocus on Planning, and Positive Reappraisal, as well as a notable use of the maladaptive strategy of Rumination. Overall, the findings provide robust support for the CERQ as a reliable and valid assessment tool for cognitive emotion regulation strategies in children and adolescents, endorsing its continued use in research and clinical settings.</p>