O
(correspondent), ITU, ITUC, MIGA, NAM, OIF, OPCW, UN, UNCTAD,
UNESCO, UNIDO, UNMIS, UNWTO, UPU, WCL, WCO, WHO, WIPO, WMO, WTO

Saint Helena
UPU

Saint Kitts and Nevis
ACP, C, Caricom, CDB, FAO, G-77, IBRD, ICAO,
ICCt, ICRM, IDA, IFAD, IFC, IFRCS, ILO, IMF, IMO, Interpol, IOC,
ITU, MIGA, NAM, OAS, OECS, OPANAL, OPCW, UN, UNCTAD, UNESCO, UNIDO,
UPU, WHO, WIPO, WTO

Saint Lucia
ACCT, ACP, C, Caricom, CDB, FAO, G-77, IBRD, ICAO, ICCt
(signatory), ICRM, IDA, IFAD, IFC, IFRCS, ILO, IMF, IMO, Interpol,
IOC, ISO, ITU, ITUC, MIGA, NAM, OAS, OECS, OIF, OPANAL, OPCW, UN,
UNCTAD, UNESCO, UNIDO, UPU, WCL, WCO, WFTU, WHO, WIPO, WMO, WTO

Saint Pierre and Miquelon
UPU, WFTU

Saint Vincent and the Grenadines
ACP, C, Caricom, CDB, FAO, G-77,
IBRD, ICAO, ICCt, ICRM, IDA, IFAD, IFRCS, ILO, IMF, IMO, Interpol,
IOC, ISO (subscriber), ITU, ITUC, MIGA, NAM, OAS, OECS, OPANAL,
OPCW, UN, UNCTAD, UNESCO, UNIDO, UPU, WCL, WFTU, WHO, WIPO, WTO

Samoa
ACP, AsDB, C, FAO, G-77, IBRD, ICAO, ICCt, ICRM, IDA, IFAD,
IFC, IFRCS, ILO, IMF, IMO, IOC, IPU, ITU, ITUC, MIGA, OPCW, PIF,
Sparteca, SPC, UN, UNCTAD, UNESCO, UPU, WCO, WHO, WIPO, WMO, WTO
(observer)

San Marino
CE, FAO, IBRD, ICAO, ICCt, ICRM, IFRCS, ILO, IMF, IMO,
Interpol, IOC, IOM (observer), IPU, ITU, ITUC, OPCW, OSCE, UN,
UNCTAD, UNESCO, UNWTO, UPU, WHO, WIPO

Sao Tome and Principe
ACCT, ACP, AfDB, AU, FAO, G-77, IBRD, ICAO,
ICCt (signatory), ICRM, IDA, IFAD, IFRCS, ILO, IMF, IMO, Interpol,
IOC, IOM (observer), IPU, ITU, ITUC, NAM, OIF, OPCW, UN, UNCTAD,
UNESCO, UNIDO, UNWTO, UPU, WCL, WHO, WIPO, WMO, WTO (observer)

Saudi Arabia
ABEDA, AfDB, AFESD, AMF, BIS, FAO, G-77, GCC, IAEA,
IBRD, ICAO, ICC, ICRM, IDA, IDB, IFAD, IFC, IFRCS, ILO, IMF, IMO,
Interpol, IOC, IPU, ISO, ITU, LAS, MIGA, NAM, OAPEC, OAS (observer),
OIC, OPCW, OPEC, PCA, UN, UNCTAD, UNESCO, UNIDO, UNRWA, UNWTO, UPU,
WCO, WFTU, WHO, WIPO, WMO, WTO

Senegal
ACCT, ACP, AfDB, AU, ECOWAS, FAO, FZ, G-15, G-77, IAEA,
IBRD, ICAO, ICC, ICCt, ICRM, IDA, IDB, IFAD, IFC, IFRCS, ILO, IMF,
IMO, Interpol, IOC, IOM, IPU, ISO (correspondent), ITU, ITUC, MIGA,
MONUC, NAM, OIC, OIF, ONUB, OPCW, PCA, UN, UNCTAD, UNESCO, UNIDO,
UNMIL, UNMOVIC, UNOCI, UNWTO, UPU, WADB (regional), WAEMU, WCL, WCO,
WFTU, WHO, WIPO, WMO, WTO

Serbia
ABEDA, BIS, BSEC, CE, CEI, EBRD, FAO, G-9, IAEA, IBRD, ICAO,
ICC, ICCt, ICRM, IDA, IFAD (suspended), IFC, IFRCS, IHO, I