India
18 years of age; universal
Indonesia
17 years of age; universal and married persons regardless
of age
Iran
15 years of age; universal
Iraq
formerly 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