Switzerland
18 years of age; universal
Syria
18 years of age; universal
Taiwan
20 years of age; universal
Tajikistan
18 years of age; universal
Tanzania
18 years of age; universal
Thailand
18 years of age; universal and compulsory
Timor-Leste
17 years of age; universal
Togo
NA years of age; universal (adult)
Tokelau
21 years of age; universal
Tonga
21 years of age; universal