This study was to investigate a simple and multiple relationships between personality characteristics (neuroticism, extraversion, openness, conscientiousness, and agreeableness) and love (intimacy, passion, and commitment) with marital satisfaction in government personnel in Ahvaz. In this study, 403 subjects were selected by a random stratified sampling method. For data collection of Neo-Five factors, love and enriching inventories were used. Results showed that there is negative significant correlation between neuroticism and marital satisfaction. But there is positive significant correlation between personality characteristics (extraversion, openness to experience, conscientiousness, and agreeableness) and marital satisfaction. Also there is positive correlation between love (intimacy, passion, and commitment) and marital satisfaction. The result of multiple regression showed a multiple correlation coefficients between personality characteristics and love with marital satisfaction (P<0.0001).