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Vitiligo is a multifactorial skin disease with established role of genetics and autoimmunity in its pathogenesis. Vitamin D receptor (VDR) polymorphisms have been suggested to correlate with risk of vitiligo in some ethnic populations. On the other hand, cathelicidin, one of the innate immune system components, has a role in development of some chronic skin diseases and VDR regulates the expression of cathelicidin. We aimed to determine the plasma level of cathelicidin and its association with the VDR gene polymorphisms as well as plasma vitamin D level in patients with vitiligo. Ninety vitiligo patients and 90 non‐vitiligo controls participated in this study. Blood levels of 25(OH) vitamin D and cathelicidin were determined with ELISA. Genotyping for VDR polymorphisms (ApaI, TaqI, FokI and BsmI) was done with RFLP‐PCR method. Mean blood level of cathelicidin was significantly higher in vitiligo patients as …