Iraq
conventional long form: Republic of Iraq
conventional short form: Iraq
local long form: Jumhuriyat al-Iraq
local short form: Al Iraq

Ireland
conventional long form: none
conventional short form: Ireland
local long form: none
local short form: Eire

Isle of Man
conventional long form: none
conventional short form: Isle of Man
abbreviation: I.O.M.

Israel
conventional long form: State of Israel
conventional short form: Israel
local long form: Medinat Yisra'el
local short form: Yisra'el

Italy
conventional long form: Italian Republic
conventional short form: Italy
local long form: Repubblica Italiana
local short form: Italia
former: Kingdom of Italy

Jamaica
conventional long form: none
conventional short form: Jamaica

Jan Mayen
conventional long form: none
conventional short form: Jan Mayen

Japan
conventional long form: none
conventional short form: Japan
local long form: Nihon-koku/Nippon-koku
local short form: Nihon/Nippon

Jersey
conventional long form: Bailiwick of Jersey
conventional short form: Jersey

Jordan
conventional long form: Hashemite Kingdom of Jordan
conventional short form: Jordan
local long form: Al Mamlakah al Urduniyah al Hashimiyah
local short form: Al Urdun
former: Transjordan