This study investigated whether meaning in life moderates the relationship between learned helplessness and SNS addiction proneness among Korean young adults. Data were collected through an online self-report survey measuring learned helplessness, SNS addiction proneness, and meaning in life (search for meaning and presence of meaning). The data were analyzed using descriptive statistics, correlation analysis, and bootstrapping methods with the SPSS Macro. The results showed, first, that learned helplessness had a significant positive effect on SNS addiction proneness. Second, both search for meaning and presence of meaning moderated the relationship between learned helplessness and SNS addiction proneness. Specifically, individuals with higher levels of meaning in life showed lower SNS addiction tendencies, even when experiencing high levels of learned helplessness. These findings suggest the need for educational and counseling programs that not only reduce learned helplessness but also enhance meaning in life in order to prevent and alleviate SNS addiction among young adults.