Immunoglobulin A nephropathy (IgAN) has been identified in patients with various malignancies. Although membranous glomerulonephritis and minimal change disease have been described in patients with mesothelioma, to our knowledge IgAN associated with mesothelioma has not been reported. We present a case of IgAN, characterized by progressive deterioration of renal function from normal and confirmed by kidney biopsy. Despite improvement of renal function following treatment with cyclophosphamide and prednisone, the patient succumbed to acute respiratory failure 8 months later. We conclude that IgAN may be a potential complication of mesothelioma.