Russia:
Russian ruble (RUR)

Rwanda:
Rwandan franc (RWF)

Saint Helena:
Saint Helenian pound (SHP)

Saint Kitts and Nevis:
East Caribbean dollar (XCD)

Saint Lucia:
East Caribbean dollar (XCD)

Saint Pierre and Miquelon:
French franc (FRF); euro (EUR)

Saint Vincent and the Grenadines:
East Caribbean dollar (XCD)

Samoa:
tala (WST)

San Marino:
Italian lira (ITL); euro (EUR)

Sao Tome and Principe:
dobra (STD)