Ainu

Ainu or Aynu may refer to:
 * Ainu people, an East Asian ethnic group of Japan and the Russian Far East
 * Ainu languages, a family of languages
 * Ainu language of Hokkaido
 * Kuril Ainu language, extinct language of the Kuril Islands
 * Sakhalin Ainu language, extinct language from the island of Sakhalin
 * Ainu music
 * Ainu cuisine
 * Ainu (Middle-earth), spirit in J. R. R. Tolkien's legendarium
 * Ainu (insect), a beetle in the family Tenebrionidae
 * Äynu people, of Western China
 * Äynu language