Background <p>This study aimed to explore the correlation between environmental identity, connectedness to nature, psychological well-being, and eco-anxiety among 2023 Kahramanmaraş earthquake survivors.</p> Methods <p>This descriptive and correlational study was conducted using a purposive sampling method with 235 earthquake survivors (75.7% female and aged 18–65 years) residing in three different container settlements in Hatay, Turkey. Data were collected using the Environmental Identity Scale, Nature Connectedness Scale, Eco-Anxiety Scale, and Psychological Well-Being Scale and analyzed using descriptive statistics, Pearson correlation, and multiple regression analysis.</p> Results <p>The total environmental identity score of earthquake survivors was 76.31 ± 10.83, nature connectedness was 60.56 ± 8.57, eco-anxiety was 19.00 ± 8.25, and psychological well-being was 40.79 ± 8.30. A significant positive correlation was found between environmental identity, connectedness to nature, and eco-anxiety (<i>p</i> &lt; 0.001). However, no significant correlation was observed between eco-anxiety and psychological well-being (<i>p</i> &gt; 0.05). All predictor variables together explained 11.1% of the variance in psychological well-being (Adjusted R² = 0.111), indicating a modest effect. Environmental identity emerged as the strongest predictor of psychological well-being (β = 0.255, <i>p</i> &lt; 0.01).</p> Conclusions <p>These findings may guide the development of educational programs assisting earthquake survivors in coping with eco-anxiety, strengthening their connection to nature, and enhancing their psychological well-being.</p>