We report a case of malignant melanoma of the kidney presenting as a primary tumor. This tumor was found incidentally in a 67-year-old man. This is a rare primer malign melanoma case of the kidney in 67-year old man, with no history of melanoma, presenting with an asymptomatic solitary renal mass. The patient underwent a right radical nephrectomy, We discuss the probability that this tumor is renal in origin and directly linked to the origin of malignant melanoma.