Singapore
Singapore dollar (SGD)

Slovakia
Slovak koruna (SKK)

Slovenia
euro (EUR)
note: on 1 January 2007, Slovenia's currency became the euro; both
the tolar and the euro were in circulation from 1 January until 15
January

Solomon Islands
Solomon Islands dollar (SBD)

Somalia
Somali shilling (SOS)

South Africa
rand (ZAR)

Spain
euro (EUR)
note: on 1 January 1999, the European Monetary Union introduced the
euro as a common currency to be used by the financial institutions
of member countries; on 1 January 2002, the euro became the sole
currency for everyday transactions with the member countries

Sri Lanka
Sri Lankan rupee (LKR)

Sudan
Sudanese dinar (SDD)

Suriname
Surinam dollar (SRD)