Slovenia
18 years of age; universal (16 years of age, if employed)
Solomon Islands
21 years of age; universal
Somalia
18 years of age; universal
South Africa
18 years of age; universal
Spain
18 years of age; universal
Sri Lanka
18 years of age; universal
Sudan
17 years of age; universal
Suriname
18 years of age; universal
Swaziland
18 years of age
Sweden
18 years of age; universal