Background: Stress urinary incontinence (SUI) considers the most prevalent sort of urine incontinence that reduces quality of life. Aim: To evaluate the effect of nursing interventions on reducing severity of stress urinary incontinence among adult women. Research design: Quazi experimental research design was utilized to conduct this study. Setting: This study was carried out in the urology outpatient clinic in the Urology and Nephrology Assuit University Hospital. Sample: A sample of 50 adult women, the mean age of studied patients was (42.22±11.84). Tools of the study: Two tools were used by the researcher namely: Tool I: A structured interview questionnaire sheet it included two parts, part i: Demographic data of patient and part ii: Medical& urological data assessment. Tool II: Sandvik Incontinence Severity Index (ISI), this tool was used to assess the severity of stress urinary incontinence before and after nursing interventions to assess its effect on reducing severity of stress urinary incontinence. Results: Following the implementation of nursing interventions, there was a statistically significant decrease in the severity of stress urinary incontinence episodes (p=0.051). Conclusion: Provided nursing interventions are effective in reducing severity of SUI in adult women. Recommendations: Using various educational methods in a regular basis for appropriate management of stress urinary incontinence among adult women.