FEYISA DESTA2024-04-122024-04-122021-01This paper focused on the assessment of internal audit effectiveness in oromia international bankwolkite branch. Internal auditing help the bank to accomplish its objectives by bringing a systematic discipline to evaluate and improve the efficiencies manner. The study was tried to assess the effectiveness factors, like internal audit quality, management support, organization setting, organizational independence of internal auditors and audit attribute. The study would be used primary sources of data in order to gather the required information. The data would be collected through structured questionnaire distribution to managers and employees (8respondents) purposively. Then the data would be processed, analyzed and interpreted by using descriptive statistics. The findings further indicate that there is a problem regarding quality of internal audit in internal audit department of OIB Wolkite branch. Based on findings, conclusion and recommendations to the banks and suggestions for other researchers are forwarded.enThesis