Rosai-Dorfman disease is a rare, idiopathic, benign, histiocytic proliferation usually seen in younger patients. Most commonly neck lymph nodes are involved with a predominant infiltration of sinusoidal histiocytes. Nearly half of the patients have extranodal manifestation. Two cases of Rosai-Dorfman disease involving the nose and the paranasal sinuses are presented. The clinical presentation, radiographic findings, treatment and histological characteristics of the disease are discussed.