Isuna Hasekura is a Japanese author. In 2005, Hasekura won the Silver Prize in the twelfth Dengeki Novel Prize with his debut novel Spice and Wolf. The first volume was published the following year.

Isyllus (Ancient Greek: Ἴσυλλος) was an ancient Greek poet from Epidaurus, of the 4th or 3rd century BC.

Italo Calvino was an Italian writer and journalist. His best known works include the Our Ancestors trilogy (1952–1959), the Cosmicomics collection of short stories (1965), and the novels Invisible Cities (1972) and If on a winter's night a traveler (1979).

Aron Hector Schmitz, better known by the pseudonym Italo Svevo, was an Italian and Austro-Hungarian writer, businessman, novelist, playwright, and short story writer.

Italo Zannier is an Italian art historian, photographer, academic and historian of photography.

Ithell Colquhoun was a British painter, occultist, poet and author. Stylistically her artwork was affiliated with surrealism. In the late 1930s, Colquhoun was part of the British Surrealist Group before being expelled because she refused to renounce her association with occult groups.

Itō Sachio was the pen-name of Itō Kōjirō , a Japanese tanka poet and novelist active during the Meiji period of Japan.

Itzhak Katzenelson (Hebrew: יצחק קצנלסון, Yiddish: (יצחק קאַצ נעלסאָן was a Polish Jewish teacher, poet and dramatist. He was born in 1886 in Karelichy near Minsk, and was murdered on 1 May 1944 in Auschwitz.

Itzik Feffer, also Fefer was a Soviet Yiddish poet executed on the Night of the Murdered Poets during Joseph Stalin's purges.

Itzik Manger was a prominent Yiddish poet and playwright, a self-proclaimed folk bard, visionary, and 'master tailor' of the written word. A Jew from Bucovina, Manger lived in Romania, Poland, France, England, the US, Canada (Montreal) and finally Israel.