The melanocortin system is a neuroimmunoendocrine hormone system that constitutes the fulcrum in the homeostatic control of a diverse array of physiological functions, including melanogenesis, inflammation, immunomodulation, adrenocortical steroidogenesis, hemodynamics, natriuresis, energy homeostasis, sexual function and exocrine secretion. The kidney is a quintessential effector organ of the melanocortin hormone system with melanocortin receptors abundantly expressed by multiple renal paranchymal cells, including podocytes, mesangial cells, glomerular endothelial cells and renal tubular cells. Converging evidence unequivocally demonstrates that the melanocortin based therapy by using the melanocortin peptide adrenocorticotropic hormone (ACTH) is prominently effective in inducing remission of steroid resistant nephrotic syndrome caused by a variety of glomerular diseases, including membranous nephropathy and podocytopathies such as minimal change disease and focal segmental glomerulosclerosis, suggesting a steroidogenic independent melanocortin mechanism. Mechanistically, ACTH and other melanocortin peptides as well as synthetic melanocortin analogues possess potent proteinuria reducing and renoprotective effects that could be attributable to both direct protection of glomerular cells and systemic immunomodulation. Thus, leveraging melanocortin signaling pathways by using either the existing U.S. Food and Drug Administration approved melanocorin peptide ACTH or novel synthetic melanocortin analogues represents a promising and pragmatic therapeutic strategy for glomerular diseases. This review article introduces the biophysiology of melanocortin hormone system with emphasis on the kidney as the target organ, discusses the existing clinical and experimental data on melanocortin treatments for glomerular diseases, elucidates the potential mechanisms of action, and describes the potential side effects of melanocortin based therapy.