Iraq
18 years of age; universal
Ireland
18 years of age; universal
Isle of Man
16 years of age; universal
Israel
18 years of age; universal
Italy
18 years of age; universal (except in senatorial elections,
where minimum age is 25)
Jamaica
18 years of age; universal
Japan
20 years of age; universal
Jersey
16 years of age; universal
Jordan
18 years of age; universal
Kazakhstan
18 years of age; universal