Spain:
Spanish peseta (ESP); euro (EUR)

note: on 1 January 1999, the EU introduced the euro as a common currency that is now being used by financial institutions in Spain at a fixed rate of 166.386 Spanish pesetas per euro and will replace the local currency for all transactions in 2002

Sri Lanka:
Sri Lankan rupee (LKR)

Sudan:
Sudanese dinar (SDD)

Suriname:
Surinamese guilder (SRG)

Svalbard:
Norwegian krone (NOK)

Swaziland:
lilangeni (SZL)

Sweden:
Swedish krona (SEK)

Switzerland:
Swiss franc (CHF)

Syria:
Syrian pound (SYP)