In this study, the mediating role of hopelessness in the relationship between the meaning attributed to marriage and loneliness was examined. The study group consists of 567 participants (348 male, and 219 female). Data were obtained using "Meaning Attributed to Marriage Scale", "UCLA Loneliness Scale Short Form" and "Beck Hopelessness Scale". In line of research hypothesis, the research data were analyzed using regression analysis. In addition, whether hopelessness has a statistically significant mediating effect on the relationship between the meaning attributed to marriage and loneliness was tested using the mediator model in line with the research hypotheses. In the mediator model tested, it was seen that hopelessness had a partial mediating effect on the relationship between the positive and negative meanings attributed to marriage and loneliness.