Rwanda
1 July 1962 (from Belgium-administered UN trusteeship)
Saint Helena
none (overseas territory of the UK)
Saint Kitts and Nevis
19 September 1983 (from UK)
Saint Lucia
22 February 1979 (from UK)
Saint Pierre and Miquelon none (territorial collectivity of France; has been under French control since 1763)
Saint Vincent and the Grenadines
27 October 1979 (from UK)
Samoa
1 January 1962 (from New Zealand-administered UN trusteeship)
San Marino
3 September A.D. 301
Sao Tome and Principe
12 July 1975 (from Portugal)
Saudi Arabia
23 September 1932 (unification of the kingdom)