Aims and ObjectivesThis study was conducted to examine the possible aetiology of nocturia in patients with long‐term COVID‐19.BackgroundPhysical and neuropsychiatric symptoms, an increase in overactive bladder symptoms, especially from urinary system complaints, has been reported in patients with COVID‐19, 10–14 weeks after the illness.DesignA descriptive design.MethodsThe study consisted of 70 patients who had experienced COVID‐19, had nocturia, and were followed in the State Hospital between April and July 2022. Data were collected using a patient information form, the ‘TANGO’ nocturia screening tool, and the Visual Analog Scale. This study was created in accordance with the STROBE Statement Checklist.ResultsWhen the nocturia effects of long‐term COVID‐19 were examined it was determined that the urinary tract was the ‘priority’ aetiological condition. It was observed that there was a significant difference between the aetiological factor groups in terms of the mean age of the patients and the number of nocturia (p < .05). According to post‐hoc analysis, the mean age of patients with a dominant cardio‐metabolic factor was found to be significantly younger (p < .05). In addition, when comparing the number of nocturia according to the aetiological factors of the patients, it was observed that the number of nocturia was significantly frequent in the patients with a dominant sleep factor (p < .05).ConclusionsIt was found that the urinary tract aetiological factor was dominant in patients with long‐term COVID‐19 and nocturia, patients with a dominant cardiovascular aetiological factor were younger, and that the number of nocturia was higher in patients with a dominant sleep factor.Relevance to Clinical PracticeIdentification of the early signs and symptoms and underlying causes of nocturia in individuals with post‐COVID‐19 syndrome will enable nurses and health professionals to guide the early identification of different underlying problems, as well as the implementation of approaches to treat and eliminate nocturia.Patient or Public ContributionThe patients contributed to the study by agreeing to participate in the evaluation of nocturia complaints after COVID‐19 infection.