The increasing complexity of artificial intelligence (AI) models has led to significant challenges in ensuring their trustworthiness, particularly in terms of interpretability, fairness, and robustness. This chapter explores the application of causal inference as a powerful framework to address these challenges. We introduce the CausalEnhanced Interpretable AI (CEIAI) framework, a novel methodology that integrates causal discovery and inference with machine learning models to enhance their transparency and fairness. Using the UCI Adult Income dataset as a case study, we demonstrate how this framework can be used to build more trustworthy AI systems. The proposed methodology combines causal graph construction, causal regularized model training, and counterfactual explanations to provide deeper insights into model behavior. Our simulation results show that the causal-enhanced model achieves a significant reduction in fairness-related disparities, such as demographic parity and equalized odds, while maintaining a high level of predictive accuracy. By leveraging causal reasoning, we can move beyond correlational patterns and develop AI systems that are not only accurate but also fair, interpretable, and aligned with human values.