The following is a list of Japanese writers whose family name begins with the letter I

<div style="text-align: center;">List by Family Name: A - B - C - D - E - F - G - H - I - J - K - M - N - O - R - S - T - U - W - Y - Z</div>

  • Ibuse Masuji (February 15, 1898 – July 10, 1993)
  • Ido Reizan (1859–1935)
  • Ihara Saikaku (1642–1693)
  • Iida Dakotsu (April 26, 1885 – October 3, 1962)
  • Ikenami Shotaro (January 25, 1923 – May 3, 1990)
  • Ikezawa Natsuki (born 1945)
  • Ikkyu (1394–1481)
  • Inagaki Manjirō (September 26, 1861 – November 25, 1908)
  • Inagaki Taruho (December 26, 1900 – October 25, 1977)
  • Inoue Hisashi (1934–2010)
  • Inoue Kenkabō (1870–1934)
  • Inoue Yasushi (May 6, 1907 – January 29, 1991)
  • Inui Kurumi (born 1963)
  • Irokawa Takehiro (1929–1989)
  • Isaka Kōtarō (born May 25, 1971)
  • Lady Ise (c. 875 – c. 938)
  • Ishibashi Ningetsu (September 1, 1865 – February 1, 1926)
  • Ishida Ira (born March 8, 1960)
  • Ishigaki Rin (February 21, 1920 – December 26, 2004)
  • Ishiguro Kazuo (born November 8, 1954)
  • Ishihara Fujio (born 1933)
  • Ishihara Shintaro (1932–2022)
  • Ishikawa Jun (March 7, 1899 – December 29, 1987)
  • Ishikawa Takuboku (February 20, 1886 – April 13, 1912)
  • Ishikawa Tatsuzo (July 2, 1905 – January 31, 1985)
  • Ishizuka Tomoji (September 20, 1906 – February 8, 1986)
  • Einosuke Itō (November 21, 1903 – July 26, 1959)
  • Itō Hiromi (born September 13, 1955)
  • Ito Junji (born 1963)
  • Itō Keikaku (Project Itoh) (October 14, 1974 – March 20, 2009)
  • Ito Noe (January 21, 1895 – September 16, 1923)
  • Ito Sachio (August 18, 1864 – July 30, 1913)
  • Ito Takami (born 1961)
  • Itoyama Akiko (born 1966)
  • Izawa Motohiko (born February 1, 1954)
  • Izumi Kyōka (November 4, 1873 – September 7, 1939)
  • Izumi Shikibu (c. 978 – c. 1034)
  • Izumo no Okuni (c. 1572 – 1613)