<p>The study aimed to assess the impact of disasters on children’s fear, stress, insomnia, and well-being in Türkiye and identify predictive factors. 476 children were included in this descriptive and cross-sectional study. The study’s data, which was conducted online, was collected in descriptive features form, disaster experience form, Disaster Fear Form, Perceived Stress Scale in Children and, Stirling Well-Being Scale for Children. A multiple linear regression analysis was conducted to identify the predictors influencing children’s emotional and psychological well-being. In the study, it was determined that 84.9% of the children experienced at least one disaster, and 68.5% experienced fear after the disaster. As children’s fear of disaster, stress, and insomnia levels increased, their emotional and psychological states worsened (<i>p</i> &lt; .05). It was found that earthquake experience and fear of disaster had a significant predictive effect on children’s emotional and psychological well-being (<i>p</i> &lt; .05). The study has shown that children experience fear, and their emotional and psychological states are negatively affected due to disasters. Children who are directly or indirectly affected by disasters are among the most vulnerable groups. Therefore, initiatives to evaluate, protect, and improve children’s emotional and psychological states after disasters should be planned, implemented, and supervised. In this way, they can be helped to become healthy individuals in adulthood.</p>