The article presents the results of development of the Russian version of the Relationship Assessment Scale by S. Hendrick. As distinct from the satisfaction with marriage test, well-known in our country, this scale is characterized by good usability, parsimony and applicability for diagnostics of satisfaction with both marital and other intimate relationships between adults. Approbation of the proposed Russian version was conducted on three samples (general size N = 602), including students, employees of state-funded organizations and Internet users of various ages (who took part in online-testing), who were officially married or in premarital relationships. The results of confirmatory factor analysis confirmed the one-dimensional structure of the scale (with the presence of covariance, which reflected the specifics of respondents’ reaction to the reversed items of the scale). The scale showed excellent reliability in internal consistency (Cronbach’s alpha .84 – .89) and retest reliability (> .7). Convergent validity is confirmed by high correlations with two diagnostic scales of satisfaction with marriage (r1 = .82, r2 = .88). Construct validity was confirmed by foreseeable correlations with scales of styles of love, attachment, subjective wellbeing and happiness. Moderate correlation was found between the measure of the scale and propensity for self-deception. Significant influence on relationships satisfaction was shown by factors of gender, marital status and their interaction, wherein the highest level of satisfaction was characteristic of men in marriage. Though relationships satisfaction in men is significantly higher than in women, the range of difference is not large (Cohen’s d = .25). The analysis of differential functioning of the items of the scale showed their independence from gender and dependence from marital status, which may reflect different interpretation of some items by people in relationships of various types. The acquired results allow to recommend the suggested version of the scale as an instrument for evaluation of satisfaction with marital or other intimate relationships of adults.