This study aimed to identify the availability level of organizational commitment (OC) among employees in the Jordanian commercial banks, as well as to measure its impact on their job performance (JP). To achieve the objective of the study, 257 copies of the questionnaire were distributed to a random sample of employees at all administrative level in the Jordanian commercial banks. The results of the study have indicated that OC is available in Jordanian banks with a high degree. Moreover, it has showed that the emotional commitment is the most prevailing commitment. As well as, the study showed that there is a significant positive impact of OC on the JP. The study recommended that it is very important to set strategic plans to promote OC among the employees of Jordanian commercial banks.