Objective This study aimed to determine the prevalence of dizziness and its associated factors in patients with COM at two otologic referral centres in a middle-income country.Design Cross-sectional study. Adults with and without COM diagnosis from two otology-referral centres in Bogotá (Colombia) were included. Dizziness and quality of life were assessed using the “Chronic Suppurative Otitis Media Questionnaire-12” (COMQ-12), and sociodemographic questionnaires were applied. Otoscopic evaluation and audiometric data were collected.Study sample A total of 231 adults.Results Of the 231 participants, up to 64.5% (n = 149) reported at least mild inconvenience due to dizziness. Factors associated with dizziness included female sex (aPR: 1.23; 95% CI: 1.04–1.46), chronic suppurative otitis media (aPR: 3.02; 95% CI: 1.21–7.52), and severe tinnitus (aPR: 1.75; 95% CI: 1.24–2.48). An interaction was found between socioeconomic status and educational level, with more frequent reports of dizziness in the middle/high economic status and secondary education (aPR: 3.09; 95% CI: 0.52–18.55; p < 0.001). Differences of 14 points in symptom severity and 18.5 points in the total score of the COMQ-12 were found between the groups with dizziness and without dizziness.Conclusions Dizziness was frequent in patients with COM and was associated with severe tinnitus and quality of life deterioration.