Background: The Dietary Sodium Restriction Questionnaire (DSRQ) is based on the theory of planned behavior. Originallydeveloped in English, this instrument, consisting of three subscales (divided in 16 items evaluating the parameters associatedwith attitude relative to behavior, the subjective norm and the perceived behavioral control), identifies the factors affectingadherence to low-sodium diet in patients with congestive heart failure (CHF).Objectives: The purpose of this study was to perform the DSRQ transcultural adaptation into Spanish to be used in Argentinaand assess its psychometric properties (validity and reliability).Methods: The transcultural adaptation was done with the recommended methodology (translation, synthesis, revision and backtranslation). Its validity was explored by principal component structure and factor analysis with factor extraction and Varimaxrotation. Reliability was analyzed by internal consistency calculation (Cronbach’s alpha) and the item-total scale correlation.Results: Headlines were adjusted and one question only had relevant semantic changes in the transcultural adaptation. Atotal of 230 CHF patients were included for the psychometric analysis. The proportion of missing data was very low (0.20%).Three factors were extracted from the main component analysis. After Varimax rotation, the items were grouped with theselected factors, matching the three original subscales. In the item-total analysis, no correlation showed a value < 0.30. GlobalCronbach’s alpha was 0.86 (0.89, 0.71 and 0.89 for the three subscales, of attitude relative to behavior, subjective norm andperceived behavioral control, respectively).Conclusions: We performed for the first time the DSRQ transcultural adaptation into Spanish for its use in Argentina. Thisversion of the instrument showed adequate validity and reliability.