Background: According to the American College of Rheumatology, osteoarthritis is a heterogeneous group of conditions that lead to joint signs and symptoms. This disease causes pain and disability in patients so that it interferes with daily activities and causes severe socio-economic impacts. The prevalence of osteoarthritis in Indonesia increases with age. This study aims to determine the clinical profile of knee osteoarthritis outpatients at the Medical Rehabilitation Installation at Dr. Soetomo General Hospital Surabaya. Methods: This study used retrospective descriptive method using medical records of knee osteoarthritis patients at the Medical Rehabilitation Outpatient Installation of Dr. Soetomo General Hospital Surabaya for the period July 2018 - August 2019. There were obtained 87 samples of patient data that met the inclusion criteria. The variables in this study such as age, gender, type of knee osteoarthritis of the patient, and the location of the patient's knee osteoarthritis. Results: The results showed that most of the samples were in the elderly group (>60 years) as many as 50.57%, the patients were female (86.21%). The patient had secondary osteoarthritis and the patient had knee osteoarthritis on both sides of the knee. Conclusion: Based on this study, it was concluded that age, gender, location of knee osteoarthritis are appropriate variables in various other studies and the existing theories.