This study tested the relationships between personality, measured with the Neuroticism Extraversion Openness Personality Inventory-Revised (NEO-PI-R), satisfaction with life and satisfaction with sport, based on the five dimensions and on the thirty facets. Consistent with previous studies, satisfaction with life and satisfaction with sport were highly correlated. Stepwise regressions analysis showed that neuroticism and extraversion were the best predictors of life and sport satisfaction, bearing in mind that the other dimensions did not provide any prediction whatsoever. These results also indicated that a more precise facet-based assessment of personality significantly increased the prediction of satisfaction with life. The parametrical or graphical regression analysis LOESS revealed an interesting and different relationship between personality and satisfaction with life and sport.