Objective. This study presents a Spanish version of the Cognitive Flexibility Scale (CFS), a subjective and brief instrument to measure Cognitive Flexibility (CF), and analyzes its psychometric characteristics. Method.The items of the scale’s original version were adapted to Spanish. An interview containing the adapted version of the CFS, the Adult Executive Functioning Inventory (ADEXI), the Interpersonal Reactivity Index (IRI), and sociodemographic data, was administered to an intentional sample of 369 Argentine adults, aged between 18 and 60, through an online platform. Results. The CFS’s internal consistency was high (α = .813). A two-factor model, Strengths and Difficulties in CF, showed the best fitfor the data. The CFS shows a negative correlation with the executive deficit and a positive correlations with empathy dimensions. Discussion. The Spanish-adapted version of the CFS shows satisfactory psychometric properties in the Argentine adult population.