Training and development are among the most significant human resource practices influencing employee performance, retention, and organizational competitiveness. This study titled “A Study on the Impact of Training and Development on Employees’ Productivity in IT Companies in Chennai” aims to assess how structured training initiatives influence productivity, job satisfaction, and the overall effectiveness of employees in the IT sector. Data were collected from 108 employees representing various IT firms in Chennai through a structured questionnaire. The collected responses were analyzed using SPSS with tools such as Percentage Analysis, Chi-square, Correlation, and Regression to explore the relationship between training factors and employee outcomes. The regression results (F = 4.869, Sig. = 0.010) indicate a significant relationship between training relevance and employees’ ability to apply knowledge learned in their work environment. Correlation analysis (r = 0.239, Sig. = 0.013) shows a positive relationship between the type of training attended and satisfaction levels, while the Chi-square test (p = 0.000) highlights a gender-based difference in managerial support perception. The findings emphasize that effective, job-relevant, and inclusive training programs, backed by managerial encouragement and continuous learning opportunities, can significantly enhance employee motivation, productivity, and engagement. The study concludes that organizations must view training not as a cost but as a strategic investment in human capital to drive long-term growth and innovation.