This study aims to see the effectiveness of logotherapy in increasing the meaning of life in prisoners. People who commit crimes are people who have lost their meaning, they feel a false existential. Being in prison is an unpleasant experience, but when painful things cannot be interpreted, a person will not find his true self. In this study using the experimental method with a one group pretest posttest design. Logotherapy was given to 6 prisoners who were selected based on certain criteria. The intervention lasted 90-120 minutes per session, totaling 6 sessions. This study uses a non-parametric statistical analysis test with Wilcoxon sign-rank. The results of the significance scale scores were analyzed using the Wilcoxon sign-rank test. Based on the results of the different test on the significance scale score above, the p value was 0.046 (p < 0.05). Based on these results, it can be concluded that there is a significant difference in the meaning of inmates' lives before and after being given logotherapy. Keywords: Logotherapy, the meaning of life, prisoners