The aim of this study was to examine the relationship between body mass index, body satisfaction and subjective well-being among university students. Research was conducted through online survey on 416 students of the University of Zagreb. Age of the students ranged between 18 and 29, and 201 students were female. Body mass index was calculated based on the information participants gave about their body weight and height, while body satisfaction was measured by Body-Esteem Scale for Adolescents and Adults which consists of three subscales: satisfaction with appearance, satisfaction with weight and satisfaction with attribution. Subjective well-being was measured by the Flourishing Scale. Analysis showed correlation between body mass index and body satisfaction measures on total sample and on the female sample. In the men sample only correlation between body mass index and satisfaction with weight was low and significant. The correlation between subjective well-being and body satisfaction subscales was found in all samples, female, male and total. Unexpectedly the greater correlations between these variables were found in male than in female sample. On the other hand, no correlation was observed between body mass index and the subjective well-being. Satisfaction with appearance and satisfaction with attribution both significantly contributed to explaining subjective well-being, both in men and women. The only difference was that the contribution of those two predictors was simmilar in the men sample, while in women's sample satisfaction with appearance contributed more to explaining well-being.