The purpose of this research is using the Analytical Network Process to help organizations with Internal Auditor Selection. The researcher, drawing on all of the systematic extrapolation and deductive scientific research, and after that the researcher to the model proposed in final form, its application to one of the companies listed in Egyptian Stock Exchange as a case study. And through the relative weights of the three alternatives in terms of the main and sub-factors for choosing the internal auditor and this led to the first alternative, related to Insourcing, ranked first with a rate of 39.20%. and The second alternative, related to Outsourcing, ranked third with a rate of 23.43%. and The third alternative, related to Co-Sourcing, ranked second with a rate of 37.36%. And the researcher also performed an Sensitivity analysis of the results of applying the proposed model, and that used the Plot map the sensitivity test by applying the second main factor (neutrality, independence, and objectivity). and that it is when increasing the relative importance of the second main factor in the proposed model for the third alternative compared to the second alternative from 1/2 to 4, where that led to me to a change in the order of the alternatives from what it was the situation before making the change.
