This study is focused upon investigating the correlation between self religiosity and some psychological and neurotic disorders such as phobia, conventional hysteria, hypochondriasis and compulsive obsession. The problem is addressed by the application of three measurements: The religiosity rating scale designed by Mohammad Hussein, Minnesota Multiphasic personality inventory (MMPI), and Yale Brown’s Rating Scale for compulsive obsession. For the statistical analysis of the data, the study took advantage of the SPSS program together with the T-test and the ANOVA method. As result of surveying a representative sample of four hundred students related to four Sudanese universities between the ages of 20 and 40 divided into group A and group B, it was found that there was a positive impact of religiosity on the total selected subjects. It was also found that the females were more likely to show positive religious impact than their male counterparts. This factor served to indicate that the females suffer more from psychological and neurotic disorders than males. It was also noted not only a negative correlation between religiosity and hysteria but also between religiosity, phobia, and pochondria. The data analysis also suggested a positive correlation between religiosity and compulsive on one hand, and absence of correlation between gender, religiosity, and neurotic disorders on the other hand. The result suggested, as well, similarities and differences between group A and group B students with regard to hysteria, hypochondria and compulsive obsession as reflected in the thesis.