Background: Anti-nuclear antibodies (ANAs) are specific antibodies directed against a variety of nuclear antigens detected in the serum of patients with many rheumatic and non-rheumatic diseases.These antibodies are not only involved in the pathogenesis, but also constitute the basis for diagnosis and treatment of paediatric rheumatic diseases. The objective of the study was to identify the patterns and frequency of ANA positivity in Paediatric Rheumatic Diseases.