The Tokyo Metropolitan Ordinance Regarding the Healthy Development of Youths (東京都青少年の健全な育成に関する条例, Tōkyō-to Seishōnen no Kenzen na Ikusei ni Kansuru Jōrei) is a prefectural law passed by the Tokyo Metropolitan Assembly on August 1, 1964. Its purpose is to promote the healthy development of people under the age of 18 by restricting their access to published material that is considered inappropriate. The restrictions are primarily carried out through self-regulation by the publishing industry.