India
conventional long form: Republic of India
conventional short form: India

Indonesia
conventional long form: Republic of Indonesia
conventional short form: Indonesia
local long form: Republik Indonesia
local short form: Indonesia
former: Netherlands East Indies; Dutch East Indies

Iran
conventional long form: Islamic Republic of Iran
conventional short form: Iran
local long form: Jomhuri-ye Eslami-ye Iran
local short form: Iran
former: Persia

Iraq
conventional long form: Republic of Iraq
conventional short form: Iraq
local long form: Al Jumhuriyah al Iraqiyah
local short form: Al Iraq

Ireland
conventional long form: none
conventional short form: Ireland

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