Background: It is postulated that osteoarthritis (OA) patients' health-seeking behavior depends largely on the disease severity and loss of function. Objective: This study aimed to assess the pain characteristics, activity limitations, and health-seeking behaviors of older adults with OA in Nigeria. Methods: A cross-sectional survey was conducted among 230 purposively selected community-dwelling older adults in a semi-urban setting in Nigeria. Pain characteristics, activity limitations, and health-seeking behavior were assessed by an interviewer using the Chronic Pain Grade Scale, Western Ontario and McMaster Universities Arthritis Index, and Health-Care Seeking Behaviour Questionnaire, respectively. Data were analyzed using descriptive statistics and inferential statistics (chi-square and multiple regression) to predict factors influencing health-seeking behavior, and we set the alpha level at p<0.05. Results: Pain at the knee (73.0%) was the most defining feature of OA, and it was typically severe (59.1%), frequent (51.3%), felt deep in the bone (47.0%), and associated with morning stiffness (27.4%). OA led to severe activity limitation (54.3%), and 51.7% of the respondents had an overall negative health-seeking behavior. Furthermore, activity limitation was significantly associated with religion (p=0.008) and pain severity (p=0.001). Similarly, the age (p=022), sex (p=0.006), marital status (p=0.005), and ethnicity (p=0.018) were significantly associated with health-seeking behavior. In addition, health-seeking behavior was predicted by cost, preference, ethnicity, employment, marital status, and limitation inactivity. Conclusion: OA pain is prevalent among community-dwelling older adults, it imposes a severe limitation on activities of daily living, and sociodemographic factors influenced the health-seeking behaviors of patients with OA.