Introduction: Stress urinary incontinence (SUI) and erectile dysfunction (ED) are significant complications that have a negative impact on patients' quality of life following radical prostatectomy (RP). Objective: This study aimed to assess the prevalence of ED in men with SUI who underwent RP the first year after RP. Methods: This study included men who underwent RP and followed up for 1 year post-surgery. Men who received androgen deprivation therapy (ADT) or radiation therapy before or after RP were excluded. We performed a descriptive assessment of demographics, comorbidities, erectile function (EF), laboratory, surgical pathology, and nerve-sparing status (NSS). Post-op SUI was described based on the number of pads used per day, categorized as 0 to 1 pad per day (continent or mild/social SUI), 2 pads per day (moderate SUI), and ≥ 3 pads per day (severe SUI) at 3, 6, and 12 months post-RP. ED was described based on IIEF score as normal EF normal (≥24), mild ED (18-23), moderate ED (11-17), and severe ED (≤10) at 3, 6, and 12 months post-RP. We reported the prevalence of ED among men with SUI during the first year after RP. We assessed if the severity of the SUI was a predictor of severe ED in a multivariable logistic regression model at 3, 6, and 12 months post-RP. Factors entered into the model included: patient age, number of comorbidities (≥ 3), NVB status (both resected), pre-RP EF, PDE5i exposure post-RP (yes), and severe SUI (≥ 3 pads per day). Results: 9953 men were included in this study, with a median age of 62 (56, 67). The median number of comorbidities was 1 (0, 2). 10% had diabetes, 27% obstructive sleep apnea, and 19% reported 3 or more comorbidities. Preoperative median PSA was 5.7 ng/ml, with a median Gleason grade of 2 (2, 3).73% had Bilateral NSS, 20% unilateral, and 7% had both sides resected. The prevalence of severe ED was higher among men with severe SUI compared to men with 0 to 1 pad per day at 3, 6, and 12 months post-RP. At 3 months, men with 0 to 1 pad per day reported 31% no/mild ED and 59% severe ED, vs. men with severe SUI described 18% no/mild ED and 75% severe ED (p-value <0.001). At 6 months, for men with continence/mild SUI, 35% described no/mild Ed and 51% severe ED vs. men with severe SUI who had 20% no/mild ED and 70% severe ED (p-value <0.001). And at 12 months, men with 0 to 1 pad per day reported 42% no/mild ED and 46% severe ED, vs. men with severe SUI described 22% no/mild ED and 70% severe ED (p-value <0.001). In the multivariable regression model, severe SUI significantly predicted severe ED at 3, 6, and 12 months (Table1). Conclusions: Men experiencing severe SUI have a high prevalence of severe erectile dysfunction. Severe SUI significantly predicted severe ED during the first year following RP. Disclosure: No. [ABSTRACT FROM AUTHOR]