This study aims to examine the effect of corporate social responsibility on sustainable corporate reputation for private universities in Egypt via social innovation. A sample of 480 students was selected from a population that includes 54000 students of four private universities, with a response rate of the sample members was 80%. The SPSS statistical program was used to enter statistical data. The results of the statistical analysis showed that there is a significant effect of corporate social responsibility on both social innovation and sustainable corporate reputation, as well as the presence of an effect of social innovation on sustainable corporate reputation. The results of the statistical analysis also showed that social innovation mediates the relationship between corporate social responsibility and sustainable corporate reputation. Finally, the study showed that there were no significant differences in the perceptions of students of the study variables according to the differences of the demographic variables.