The study aims to determine the impact of internal marketing practices (training - incentives and rewards - communication - empowerment - clarity of role) in developing the performance of workers in Egyptian tourism companies. The practical study was conducted on a random sample of employees of Egyptian tourism companies Category (A). a questionnaire was used to collect data, and the questionnaire was analyzed with the statistical program (SPSS V.22). The most important findings of the study are that internal marketing has a positive effect on employee performance. Finally, the study recommends that tourism companies pay attention to apply internal marketing in all its dimensions and evaluate employees' performance continuously by developing an effective evaluation system.