Ei is both a surname and a given name. Notable people with the surname include:

People with the surnname

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  • Ei Ei (born 1965), Burmese singer
  • Ei Ei Thet (born 1992), Burmese swimmer
  • Ei Chaw Po (born 1990), Burmese actress, model and singer of Mon descent
  • Poe Ei Ei Khant (born 1993), Burmese actress and singer

People with the given name

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  • Ei-Q (born 1973), Japanese artist
  • Ei Aoki (born 1965), Japanese storyboard artist
  • Ei Iida (born 1967), Japanese former professional tennis player
  • Ei Hisatora (1558–1587), Japanese samurai of the Sengoku period
  • Ei Ogawa (1930-1994), Japanese screenwriter
  • Rokusuke Ei (1933–2016), Japanese lyricist, composer, author, essayist
  • Shō Ei (1559–1588), Japanese king of the Ryukyu Kingdom
  • Wada Ei (1857–1929), Japanese textile worker and memoirist