<p class="normal">This paper aims to investigate whether the role of human capital in the efficiency of bank human resources has an influence on bank diversification and performance. This study uses secondary data from data obtained from 385 commercial banks in 33 countries in Asia during the 2010-2020 period with the diversification analysis method. We find that the level of efficiency of human resources has an effective role in increasing human capital which has an impact on bank diversification and performance. The development of human resources in a human capital framework plays an important role in the diversification and improvement of bank performance.</p>