The study investigates the impact of institutional quality on economic growth in Nigeria, covering the periods from 1990 to 2022. The data was analyzed using the auto-regressive distributed lag model technique. The results showed that human capital development as an integral part of institutional quality has really contributed significantly to the performance of the economy in the short run as well as in the long run. The estimated model met both conditions of cointegration, though its impact was felt lightly as revealed by the result that there was a long run relationship between the variables, and that economic growth adjusted to stability of 22%. The study recommended a concentration of more resources into research and development to boost human capital development to enhance institutional quality of the country and economic productivity.