| Rank | Country | Elevation extremes |
198 | Thailand | lowest point: Gulf of Thailand 0 m highest point: Doi Inthanon 2,576 m |
199 | Timor-Leste | lowest point: Timor Sea, Savu Sea, and Banda Sea 0 m highest point: Foho Tatamailau 2,963 m |
200 | Togo | lowest point: Atlantic Ocean 0 m highest point: Mont Agou 986 m |
201 | Tokelau | lowest point: Pacific Ocean 0 m highest point: unnamed location 5 m |
202 | Tonga | lowest point: Pacific Ocean 0 m highest point: unnamed location on Kao Island 1,033 m |
203 | Trinidad and Tobago | lowest point: Caribbean Sea 0 m highest point: El Cerro del Aripo 940 m |
28 | Tunisia | lowest point: Shatt al Gharsah -17 m highest point: Jebel ech Chambi 1,544 m |
204 | Turkey | lowest point: Mediterranean Sea 0 m highest point: Mount Ararat 5,166 m |
18 | Turkmenistan | lowest point: Vpadina Akchanaya -81 m; note - Sarygamysh Koli is a lake in northern Turkmenistan with a water level that fluctuates above and below the elevation of Vpadina Akchanaya (the lake has dropped as low as -110 m) highest point: Gora Ayribaba 3,139 m |
205 | Turks and Caicos Islands | lowest point: Caribbean Sea 0 m highest point: Blue Hills 49 m |
206 | Tuvalu | lowest point: Pacific Ocean 0 m highest point: unnamed location 5 m |
251 | Uganda | lowest point: Lake Albert 621 m highest point: Margherita Peak on Mount Stanley 5,110 m |
207 | Ukraine | lowest point: Black Sea 0 m highest point: Hora Hoverla 2,061 m |
208 | United Arab Emirates | lowest point: Persian Gulf 0 m highest point: Jabal Yibir 1,527 m |
36 | United Kingdom | lowest point: The Fens -4 m highest point: Ben Nevis 1,343 m |
17 | United States | lowest point: Death Valley -86 m highest point: Mount McKinley 6,198 m |
209 | United States Pacific Island Wildlife Refuges | lowest point: Pacific Ocean 0 m highest point: Baker Island, unnamed location - 8 m; Howland Island, unnamed location - 3 m; Jarvis Island, unnamed location - 7 m; Johnston Atoll, Sand Island - 10 m; Kingman Reef, unnamed location - less than 2 m; Midway Islands, unnamed location - 13 m; Palmyra Atoll, unnamed location - 3 m |
210 | Uruguay | lowest point: Atlantic Ocean 0 m highest point: Cerro Catedral 514 m |
30 | Uzbekistan | lowest point: Sariqarnish Kuli -12 m highest point: Adelunga Toghi 4,301 m |
211 | Vanuatu | lowest point: Pacific Ocean 0 m highest point: Tabwemasana 1,877 m |
212 | Venezuela | lowest point: Caribbean Sea 0 m highest point: Pico Bolivar (La Columna) 5,007 m |
213 | Vietnam | lowest point: South China Sea 0 m highest point: Fan Si Pan 3,144 m |
214 | Virgin Islands | lowest point: Caribbean Sea 0 m highest point: Crown Mountain 475 m |
215 | Wake Island | lowest point: Pacific Ocean 0 m highest point: unnamed location 6 m |
216 | Wallis and Futuna | lowest point: Pacific Ocean 0 m highest point: Mont Singavi 765 m |
9 | West Bank | lowest point: Dead Sea -408 m highest point: Tall Asur 1,022 m |
21 | Western Sahara | lowest point: Sebjet Tah -55 m highest point: unnamed elevation 805 m |
| World | lowest point: Bentley Subglacial Trench -2,540 m note: in the oceanic realm, Challenger Deep in the Mariana Trench is the lowest point, lying -10,924 m below the surface of the Pacific Ocean highest point: Mount Everest 8,850 m |
217 | Yemen | lowest point: Arabian Sea 0 m highest point: Jabal an Nabi Shu'ayb 3,760 m |
245 | Zambia | lowest point: Zambezi river 329 m highest point: unnamed location in Mafinga Hills 2,301 m |
238 | Zimbabwe | lowest point: junction of the Runde and Save rivers 162 m highest point: Inyangani 2,592 m |