Isle of Man
noun: Manxman (men), Manxwoman (women)
adjective: Manx
Israel
noun: Israeli(s)
adjective: Israeli
Italy
noun: Italian(s)
adjective: Italian
Jamaica
noun: Jamaican(s)
adjective: Jamaican
Japan
noun: Japanese (singular and plural)
adjective: Japanese
Jersey
noun: Channel Islander(s)
adjective: Channel Islander
Jordan
noun: Jordanian(s)
adjective: Jordanian
Kazakhstan
noun: Kazakhstani(s)
adjective: Kazakhstani
Kenya
noun: Kenyan(s)
adjective: Kenyan
Kiribati
noun: I-Kiribati (singular and plural)
adjective: I-Kiribati