Title of the study: Correlation between erectile dysfunction and lower urinary tract symptoms in men with benign prostate enlargement in Ibadan. Statement of the problem and the objectives of the study: The coexistence of ED with LUTS in men with BPE is well known. However, the of severity of LUTS with the IPSS questionnaire is not without drawbacks. The study therefore aimed at assessing LUTS with uroflowmetry parameters and correlating the severity of ED with LUTS as assessed by uroflowmetry. Subjects studied: Consenting patients at the urology clinic with LUTS from September 2019 to March 2020 whose clinical findings viz; history, physical examination and investigations were suggestive of BPE who also meet the inclusion criteria were recruited into the study. Methodology: The study design was cross-sectional. Each participant completed a proforma and both the IPSS and IIEF-5 questionnaires. Participants were encouraged to drink assessment enough water to promote diuresis. When a client experienced a strong urge to void, he was instructed to void normally into a calibrated funnel positioned on a gravimetric uroflowmeter (MMSR Flowmaster, Netherlands) device connected remotely to an electronic recording system and printer behind a screen to remove the inhibitory effect of test surroundings on the voiding performance. The conduct of uroflowmetry and interpretation of its results was conducted by the investigator. The participantś ages, anthropometric measurements, patterns of LUTS, IPSS and IIEF scores were summarized statistically. Interpretation of uroflowmetry results was done in accordance with the International Continence Society (ICS) protocol. Data Analysis: Completed questionnaires/proforma were collated, data analysis was done with Statistical Package for the Social Sciences (SPSS) version 20.0. Results are presented with tables and charts. Appropriate statistical test of correlation was used to correlate IIEF-5 scores, IPSS score and Qmax. p-values less than 0.05 was statistically significant. Result: One hundred and thirteen patients were recruited. Most of the participants were older than 65years. Severe lower urinary tract symptoms were recorded in 54.9% and this had negative effect on the quality of life of over 90% of the participants. Erectile dysfunction was found in 74.3%. The study found a negative correlation between severity of erectile dysfunction and the international prostate symptoms score while there was inconclusive evidence about the association between erectile dysfunction and lower urinary tract symptoms based on uroflowmetry parameters. Conclusion: Erectile dysfunction is very common among patients with benign prostate enlargement, and this might be contributory to the negative effect on their quality of life. The relationship between the severity of erectile dysfunction and international prostate symptoms severity scores was not statistically significant. There was no significant association between erectile dysfunction and uroflowmetry parameters.