The islands comprising the Taiwan Area under the jurisdiction of the Republic of China (ROC) are classified into various island groups. The island of Taiwan, also known as Formosa, is the largest island and the main component of the ROC-controlled territories. Islands that are claimed by the ROC but not administered, including those under the control of the People's Republic of China, and those disputed with other countries such as Senkaku Islands and most of South China Sea Islands, are excluded from this list. At the adoption of Additional Articles of the Constitution of the Republic of China in the 1990s, these islands collectively form the "Free area of the Republic of China" or known alternatively as "Taiwan Area", which legally defines the territorial extent under the actual control of the ROC government. Some Taiwanese islands have various translations in English due to different systems of romanization in Chinese language in use, or derivation of differing linguistic origins from Mandarin, Hokkien, indigenous languages or other foreign languages. Some islands also have different names derived from particular historical periods which remain in use to this day. Archipelagos of Taiwan There are in total of 168 islands, these islands can be classified into the following geographical units: List of major islands by area List of Taiwanese islands with over 5 km2 of area. List of islands by geographical unit Taiwan proper Island of Taiwan (Formosa; ) Kaohsiung Cijin (); formerly a longshore bar connected to the island of Taiwan at the southern tip, this link was severed in 1975 due to Kaohsiung Port construction. Keelung City Keelung Islet () Hoping Island () The Three Northern Islands () Huaping Islet () Mianhua Islet (), the easternmost island under the actual control of the Republic of China Pengjia Islet () Nantou County Lalu (); a lake island within the Sun Moon Lake New Taipei Twin Candlestick Islets (Zhútái Shuāng Yǔ; ) Pingtung County Hsiao Liuchiu (Lamay Islet; ) Qixingyan (Seven star reefs;) Taitung County Green Island (Lyudao, Samasana; ) Orchid Island (Lanyu, Ponso no Tao, Botel Tobago; ) Lesser Orchid Island (Hsiao Lanyu, Jimagaod; ) Sansiantai ( ) Yilan County Guishan Island / Gueishan Island (Turtle Mount; ) Guiluan Island (Kuei-luan Tao, Kiran-to; , ) Penghu/Pescadores Penghu Islands (Pescadores Islands; ) (Penghu County) Penghu () Hujing Island (Hujing Islet, Huching Island; ) Tongpan Island () Baisha () Baisha Main Island (白沙島) Jibei Island ()