The study examined the impact of total quality management on employee performance in deposit money bank in Nigeria. The specific objectives were to: evaluate the impact of continuous improvement on employee’s commitment in deposit money bank in Nigeria and ascertain the impact of customer focus on employee engagement in deposit money bank in Nigeria. Study area was Nigeria. The research design of the study was descriptive survey design. The study used structured questionnaire to obtain data. The population of the study comprised of 850 employee of deposit money banks in Nigeria (Annual Report of selected organizations). Simple random technique was used to select four quoted manufacturing firms namely: Eco Bank, United Bank of Africa, First Bank of Nigeria and Zenith Bank. The sample size of 272 respondents was drawn from population of the study using Slovin’s sampling technique. The hypotheses stated were tested using single regression statistic. The empirical result showed that continuous improvement has significant impact on employee’s commitment in selected manufacturing firms in Nigeria (t-statistic; 8.887; P-value; 0.000 < Sig-value; 0.05) and customer focus has significant impact on employee engagement in deposit money bank in Nigeria (t-statistic; 11.446; P-value; 0.000 < Sig-value; 0.05). The study concluded that total quality management has positive and significant impact on employee performance in deposit money bank in Nigeria. The study recommended that management of deposit money Banks should demonstrate a commitment to quality by setting clear goals, allocating resources, and creating an environment that encourages continuous improvement.