and Principe

local long form: Republica Democratica de Sao Tome e Principe

local short form: Sao Tome e Principe

Saudi Arabia:
conventional long form: Kingdom of Saudi Arabia

conventional short form: Saudi Arabia

local long form: Al Mamlakah al Arabiyah as Suudiyah

local short form: Al Arabiyah as Suudiyah

Senegal:
conventional long form: Republic of Senegal

conventional short form: Senegal

local long form: Republique du Senegal

local short form: Senegal

Seychelles:
conventional long form: Republic of Seychelles

conventional short form: Seychelles

Sierra Leone:
conventional long form: Republic of Sierra Leone

conventional short form: Sierra Leone

Singapore:
conventional long form: Republic of Singapore

conventional short form: Singapore

Slovakia:
conventional long form: Slovak Republic

conventional short form: Slovakia

local long form: Slovenska Republika

local short form: Slovensko

Slovenia:
conventional long form: Republic of Slovenia

conventional short form: Slovenia

local long form: Republika Slovenija

local short form: Slovenija

Solomon Islands:
conventional long form: none

conventional short form: Solomon Islands

former: British Solomon Islands

Somalia:
conventional long form: none

conventional short form: Somalia

former: Somali Republic, Somali Democratic Republic

South Africa:
conventional long form: Republic of South Africa

conventional short form: South Africa

former: Union of South Africa

abbreviation: RSA

South Georgia and the South Sandwich Islands:
conventional long
form: South Georgia and the South Sandwich Islands

conventional short form: none

Spain:
conventional long form: Kingdom of Spain

conventional short form: Spain

local short form: Espana

Spratly Islands:
conventional long form: none

conventional short form: Spratly Islands

Sri Lanka:
conventional long form: Democratic Socialist Republic of
Sri Lanka

conventional short form: Sri Lanka

former: Serendib, Ceylon

Sudan:
conventional long form: Republic of the Sudan

conventional short form: Sudan

local long form: Jumhuriyat as-Sudan

local short form: As-Sudan

former: Anglo-Egyptian Sudan

Suriname:
conventional long form: Republic of Suriname

conventional short form: