Background: Urinary tract infections (UTIs) are common in the elderly individual and frequently result in more serious and sometimes fatal consequences. Purpose: This study aimed to evaluate the effect of nursing intervention on knowledge and prevention of recurrent urinary tract infections among the elderly. Design& Setting: The quasi- experimental study was conducted in the urology outpatient clinics at Zagazig University Hospitals. Sample: A purposive sample of 150 elderly individuals with UTIs was divided into a study group (n=75), and a control group (n=75). Tools: Two tools were used; A Structured Interview Questionnaire on Demographic Characteristic, and Knowledge, and Risk Assessment and Manifestation of Recurrent Urinary Tract Infection. Results: The study findings showed statistically significant improvements, with 6.7% having total satisfactory knowledge pre-intervention, and an impressive 85.3% and 82.7% achieving total satisfactory knowledge in the post-test and follow-up, respectively. In comparison, the control group had only 5.3% with total satisfactory knowledge pre-intervention, and only 6.7% and 5.3% with total satisfactory knowledge in the post-test and follow-up, respectively. In addition, after the posttest, 6.7% of the study group had a total high risk, 13.3% had a total moderate risk, and 80% had a total low risk. In contrast, 50.7% of the control group had a total high risk, 33.3% had a total moderate risk, and 16% had a total low risk.