A 59-year-old male with a complaint of gross hematuria was found to have a pedunculated and non-papillary tumor on the prostatic urethra. The tumor was resected transurethrally. The pathological finding was inverted papilloma. Although the majority of the cases of inverted papilloma have been found in the bladder, we reported the 32nd case located on the prostatic urethra in Japan.