Saint Pierre and Miquelon:
French
Saint Vincent and the Grenadines:
English, French patois
Samoa:
Samoan (Polynesian), English
San Marino:
Italian
Sao Tome and Principe:
Portuguese (official)
Saudi Arabia:
Arabic
Senegal:
French (official), Wolof, Pulaar, Jola, Mandinka
Seychelles:
English (official), French (official), Creole
Sierra Leone:
English (official, regular use limited to literate
minority), Mende (principal vernacular in the south), Temne
(principal vernacular in the north), Krio (English-based Creole,
spoken by the descendants of freed Jamaican slaves who were settled
in the Freetown area, a lingua franca and a first language for 10%
of the population but understood by 95%)
Singapore:
Chinese (official), Malay (official and national), Tamil
(official), English (official)