This study aims to measure the relative efficiency of banking performance in Iraqi commercial banks and to identify the most important factors affecting the efficiency of banking performance by defining the appropriate multi-criteria decision-making model. It is to measure the relative efficiency of the decision-making units by using the data envelope analysis model (DEA) using the BCC model, which is one of the common data envelope analysis models. The (BCC) model was applied to measure the efficiency levels of 15 commercial banks operating in Iraq between 2015-2021. The results of the study showed that the factors affecting the efficiency of banking performance in commercial banks are economic and financial factors. Inputs (capital and deposits) and outputs (investments and loans) were used to measure the efficiency of commercial banks, and we found that several banks are considered efficient during the study period.