  | 
St. Helena and Dependencies | 
 English | 
  | 
St. Kittsandnevis | 
 English | 
  | 
St. Lucia | 
 English, French Patois | 
  | 
St. Vincent and The Grenadines | 
 English (official), French patois | 
  | 
Sami | 
 Lapp | 
  | 
Scotland | 
 English, Scots, Scots Gaelic | 
  | 
Seborga Principality | 
 Italian | 
  | 
Samoa | 
 Samoan and English  | 
  | 
San Marino | 
 Italian | 
  | 
São Tomé and Príncipe | 
 Portuguese | 
  | 
Sark | 
 English, French | 
  | 
Saudi Arabia | 
 Arabic, English widely spoken | 
  | 
Senegal | 
 French (official); Wolof, Serer, other ethnic dialects | 
  | 
Seychelles | 
 English and French (both official), and Seselwa (a creole) | 
  | 
Sierra Leone | 
 English (official), Mende, Temne, Krio | 
  | 
Singapore | 
 Malay, Chinese (Mandarin), Tamil, English (all official) | 
  | 
Slovakia | 
 Slovak (official), Hungarian | 
  | 
Slovenia | 
 Slovenian; most can also speak Serbo-Croatian | 
  | 
Solomon Islands | 
 English, Solomon Pijin (an English pidgin), over 60 indigenous Melanesian languages | 
  | 
Somalia | 
 Somali (official), Arabic, English, Italian | 
  | 
Somaliland | 
  Somali (official), Arabic, English | 
  | 
South Africa | 
 Xhosa and Zulu (official), English, Afrikaans, Ndebele, Sesotho sa Leboa, Sesotho, Swati, Xitsonga, Setswana, Tshivenda | 
  | 
South Georgia and South Sandwich Islands, Territory of | 
English | 
  | 
Spain and Regional flags | 
 Castilian Spanish 74% (official), Catalan 17%, Galician 7%, Basque 2% | 
  | 
Sri Lanka | 
 Sinhala (official), Tamil, English | 
  | 
Sudan | 
 Arabic (official), English, tribal dialects | 
  | 
Suriname | 
 Dutch (official), Surinamese (lingua franca), English widely spoken | 
  | 
Swaziland | 
 English and Swazi (official) | 
  | 
Sweden | 
 Swedish | 
  | 
Switzerland and Canton flags | 
 German, French, Italian (all official), Romansch | 
  | 
Syria | 
 Arabic (official), French and English widely understood |