| Country | National holiday |
| South Africa | Freedom Day, 27 April (1994) |
| South Georgia and the South Sandwich Islands | void |
| Southern Ocean | void |
| Spain | National Day, 12 October (1492); year when Columbus first set foot in the Americas |
| Spratly Islands | void |
| Sri Lanka | Independence Day, 4 February (1948) |
| Sudan | Independence Day, 1 January (1956) |
| Suriname | Independence Day, 25 November (1975) |
| Svalbard | void |
| Swaziland | Independence Day, 6 September (1968) |
| Sweden | Swedish Flag Day, 6 June (1916); National Day, 6 June (1983) |
| Switzerland | Founding of the Swiss Confederation, 1 August (1291) |
| Syria | Independence Day, 17 April (1946) |
| Taiwan | Republic Day (Anniversary of the Chinese Revolution), 10 October (1911) |
| Tajikistan | Independence Day (or National Day), 9 September (1991) |
| Tanzania | Union Day (Tanganyika and Zanzibar), 26 April (1964) |
| Thailand | Birthday of King PHUMIPHON (BHUMIBOL), 5 December (1927) |
| Timor-Leste | Independence Day, 28 November (1975) |
| Togo | Independence Day, 27 April (1960) |
| Tokelau | Waitangi Day (Treaty of Waitangi established British sovereignty over New Zealand), 6 February (1840) |
| Tonga | Emancipation Day, 4 June (1970) |
| Trinidad and Tobago | Independence Day, 31 August (1962) |
| Tunisia | Independence Day, 20 March (1956); also the anniversary of BEN ALI's assumption of the presidency, 7 November (1987) |
| Turkey | Republic Day, 29 October (1923) |
| Turkmenistan | Independence Day, 27 October (1991) |
| Turks and Caicos Islands | Constitution Day, 30 August (1976) |
| Tuvalu | Independence Day, 1 October (1978) |
| Uganda | Independence Day, 9 October (1962) |
| Ukraine | Independence Day, 24 August (1991); note - 22 January 1918, the day Ukraine first declared its independence (from Soviet Russia) and the day the short-lived Western and Central Ukrainian republics united (1919), is now celebrated as Unity Day |
| United Arab Emirates | Independence Day, 2 December (1971) |
| United Kingdom | the UK does not celebrate one particular national holiday |
| United States | Independence Day, 4 July (1776) |
| United States Pacific Island Wildlife Refuges | void |
| Uruguay | Independence Day, 25 August (1825) |
| Uzbekistan | Independence Day, 1 September (1991) |
| Vanuatu | Independence Day, 30 July (1980) |
| Venezuela | Independence Day, 5 July (1811) |
| Vietnam | Independence Day, 2 September (1945) |
| Virgin Islands | Transfer Day (from Denmark to the US), 31 March (1917) |
| Wake Island | void |
| Wallis and Futuna | Bastille Day, 14 July (1789) |
| West Bank | void |
| Western Sahara | void |
| World | void |
| Yemen | Unification Day, 22 May (1990) |
| Zambia | Independence Day, 24 October (1964) |
| Zimbabwe | Independence Day, 18 April (1980) |
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