Liuqiu or Lewchew is a Chinese place-name variously denoting:

  • Liuqiu (medieval), a realm variously identified with the main island of Taiwan, the Penghu Islands (Taiwan), and the Ryukyu Islands (Japan)
  • Ryukyu Islands, an archipelago southwest of the Japanese Home Islands (politically part of Japan)
  • Liuqiu Island or Little Liuqiu, an island southwest of the main island of Taiwan (politically part of Taiwan)