Inverted papilloma originated from mucous membrane of nasal cavity and paranasal sinuses is histologically benign, but clinically malignant due to extensive body erosion, high recurrence rate and malignant change. This neoplasm grows into the underlying stroma rather than surface epithelium, and originated from lateral nasal wall, paranasal sinuses and nasal septum and appears similar to a nasal polyp on physical examination. Recently, we have experienced 5 cases of inverted papilloma arising from inferior turbinate mucosa, septal mucous membrane and paranasal sinus. These tumors were removed surgically through intranasal approach, lateral rhinotomy and Caldwell-Luc with Denker modification, and proved as typical inverted papilloma histologically. We report these cases with review of literature.