Sudan
Arabic (official), Nubian, Ta Bedawie, diverse dialects of
Nilotic, Nilo-Hamitic, Sudanic languages, English
note: program of "Arabization" in process

Suriname
Dutch (official), English (widely spoken), Sranang Tongo
(Surinamese, sometimes called Taki-Taki, is native language of
Creoles and much of the younger population and is lingua franca
among others), Hindustani (a dialect of Hindi), Javanese

Svalbard
Russian, Norwegian

Swaziland
English (official, government business conducted in
English), siSwati (official)

Sweden
Swedish
note: small Sami- and Finnish-speaking minorities

Switzerland
German (official) 63.7%, French (official) 19.2%,
Italian (official) 7.6%, Romansch (official) 0.6%, other 8.9%

Syria
Arabic (official); Kurdish, Armenian, Aramaic, Circassian
widely understood; French, English somewhat understood

Taiwan
Mandarin Chinese (official), Taiwanese (Min), Hakka dialects

Tajikistan
Tajik (official), Russian widely used in government and
business

Tanzania
Kiswahili or Swahili (official), Kiunguju (name for Swahili
in Zanzibar), English (official, primary language of commerce,
administration, and higher education), Arabic (widely spoken in
Zanzibar), many local languages
note: Kiswahili (Swahili) is the mother tongue of the Bantu people
living in Zanzibar and nearby coastal Tanzania; although Kiswahili
is Bantu in structure and origin, its vocabulary draws on a variety
of sources, including Arabic and English, and it has become the
lingua franca of central and eastern Africa; the first language of
most people is one of the local languages