Aim: The aim of this study was to demonstrate the relationship between nocturia and geriatric syndromes, and comprehensive geriatric assessment parameters (CGA) in older men.Material and Methods: A total of 397 older outpatient men who had undergone CGA were included in this cross-sectional study. For the nocturia variable, the question, ‘Generally, during the past 30 days, how many times did you usually urinate after you have gone to sleep at night until the time you got up in the morning?’’ was used.Results: The mean age of patients was 75.6 ± 8.1. There was a significant positive correlation between the frequency of nocturia and number of drugs, Timed-up Go, and Insomnia severity score (p<0.05), while there was a significant negative correlation between Mini Nutritional Assessment, Basic activities of daily living (BADL) and Tinetti total score, and hand grip strength (p<0.05). The prevalence of patients with 0, ≥1, ≥2, ≥3, and ≥4 nocturnal episodes was 11.6%, 88.4%, 70.5%, 47.3% and 25.4%, respectively. Patients with nocturia ≥2 had lower MNA scores and had a higher fall risk, depression, and dynapenia compared to patients with nocturia ≤1. There were higher rates of insomnia, depression, frailty, dynapenia, lower BADL and nutritional status with ≥3 nocturia episodes compared to ≤ 2 nocturia episodes (p<0.05).Conclusions: Nocturia is common and associated with dynapenia, insomnia, frailty, polypharmacy, incontinence, increased fall risk and depression in older men. Therefore, nocturia is important for geriatric practice and ≥3 nocturia episodes may be used as a marker of poor health status in older men.