<p>Cognitive emotion regulation strategies (CERS) refer to the cognitive processes used to consciously or unconsciously interpret and manage emotionally arousing information. While their role in emotional functioning is well established, their association with attachment styles has received relatively limited attention. This study examines the use of CERS from both the categorical and dimensional perspectives of attachment theory while also focusing on gender differences. A sample of 684 women and 234 men, aged between 18 and 87 years old completed self-report measures, including the Relationship Scale Questionnaire and the short form of the Cognitive Emotion Regulation Questionnaire. Data were analyzed using t-tests, the Kruskal-Wallis test, and multiple regression with robust errors. Results revealed small gender differences: women scored higher on anxiety attachment dimension, rumination, and catastrophizing, whereas men scored slightly higher on acceptance. No significant differences were found between secure and dismissing-avoidant attachment styles in CERS; however, both groups differed significantly from individuals with preoccupied and fearful attachment styles. For the dimensional model of attachment, compared to the avoidant dimension, the anxiety dimension emerged as the dominant predictor, impairing cognitive processes essential for adaptive strategies and fostering reliance on maladaptive strategies. These findings highlight the pivotal role of attachment anxiety in shaping cognitive emotion regulation in both genders.</p>