Purpose: The main purpose of our study is finding out whether different methods used in evaluating balance are reliable and valid for Parkinson Disease. Material and methods: In the study, thirty idiopathic Parkinson patients were evaluated by Berg Balance Scale, Tinetti Performance Oriented Balance and Gait Scale, and clinical balance and mobility tests at their "off" and "on" periods. Additionally; the patients were evaluated by motor evaluation part of Unified Parkinson's Disease Rating Scale, Modified Hoehn and Yahr Scale. All the evaluation tests were repeated 7 days after the first applications. Results: Comparisons revealed that all the balance evaluation tests were reliable and valid for Parkinson patients. On the other hand, it was also revealed that, Berg Balance Scale is more reliable (ICC=0.99) and showing higher correlation with motor part of Unified Parkinson's Disease Rating Scale (r=-0.75, p<0.05) and Modified Hoehn and Yahr Scale (r=-0.75/0.71, p<0.05). Conclusion: As a result of our study, that Berg Balance Scale, Tinetti Performance Oriented Balance and Gait Scale, clinical balance and mobility tests can be applied to Parkinson disease patients reliably, and among these tests Berg Balance Scale gives more comprehensive information regarding evaluation of different parameters of balance.