Introduction: Adult-onset stills disease (AOSD) is a systemic inflammatory disorder, characterized by spiking fever, skin rash, and arthritis. However, the renal involvement is a rare manifestation of the disease. Here we report a case of a 23-year old female diagnosed with AOSD with kidney disease presentation: Case Report: We describe here a 23-year old female with history of intermittent polyarthritis, fever and flu like symptoms, since 4 years ago. She was treated with Prednisolone and NSAIDs, however, she did not fully respond to medications. Since two year ago, she was found to have several episodes of disease flare up with multisystemic manifestations, including high spiking fever, arthralgias, lymphadenopathy, striking hyperferritinemia, and nephrotic range PROTEINURIA with a normal serum BUN and creatinine concentration levels.Renal biopsy was associated with the minimal histological changes. Laboratory tests for other diseases were negative. By excluding other diseases, diagnosis of AOSD was suggested. Azathioprine and steroid were started for her and NSAIDs was discontinued. However, the PROTEINURIA was still existed after several months of therapy. By changing the medication to Cyclosporine, low dose steroid, and NSAIDs, PROTEINURIA was decreased toward normal ranges.Conclusions: Clinicians should be aware that PROTEINURIA can be a manifestation of still’s disease.In these patients, urinalysis and renal function should be routinely monitored.