The transformational leadership style has recently gathered considerable attention in the literature due to its potential implications on employee behavior, commitment, and performance in general. Research shows that this type of leadership can lead to improvements in the work climate and knowledge sharing. Based on a sample of 348 public sector employees in Nigeria, this paper investigated the influence of transformational leadership style on employee commitment. The data were collected through questionnaires, and Partial Least Square equation modeling SEM PLS was used to analyze the data collected. PLS-SEM analysis discovered empirical evidence of a significant positive relationship between the latent variables (IM and CO), (IS and CO). On the other hand, the statistical results show that II and IC were not significant; implications and recommendations were discussed. Keywords; Organizational commitment, transformational leadership style.