| Rank | Country | difference | Elevation extremes |
230 | Guernsey | 114 | lowest point: Atlantic Ocean 0 m highest point: unnamed location on Sark 114 m |
231 | Gaza Strip | 105 | lowest point: Mediterranean Sea 0 m highest point: Abu 'Awdah (Joz Abu 'Auda) 105 m |
232 | Qatar | 103 | lowest point: Persian Gulf 0 m highest point: Qurayn Abu al Bawl 103 m |
233 | Kiribati | 81 | lowest point: Pacific Ocean 0 m highest point: unnamed location on Banaba 81 m |
234 | Navassa Island | 77 | lowest point: Caribbean Sea 0 m highest point: unnamed location on southwest side 77 m |
235 | Bermuda | 76 | lowest point: Atlantic Ocean 0 m highest point: Town Hill 76 m |
236 | Niue | 68 | lowest point: Pacific Ocean 0 m highest point: unnamed location near Mutalau settlement 68 m |
237 | Anguilla | 65 | lowest point: Caribbean Sea 0 m highest point: Crocus Hill 65 m |
238 | Bahamas, The | 63 | lowest point: Atlantic Ocean 0 m highest point: Mount Alvernia, on Cat Island 63 m |
239 | Nauru | 61 | lowest point: Pacific Ocean 0 m highest point: unnamed location along plateau rim 61 m |
240 | Holy See (Vatican City) | 56 | lowest point: unnamed location 19 m highest point: unnamed location 75 m |
241 | Gambia, The | 53 | lowest point: Atlantic Ocean 0 m highest point: unnamed location 53 m |
242 | Turks and Caicos Islands | 49 | lowest point: Caribbean Sea 0 m highest point: Blue Hills 49 m |
243 | Cayman Islands | 43 | lowest point: Caribbean Sea 0 m highest point: The Bluff (Cayman Brac) 43 m |
244 | Clipperton Island | 29 | lowest point: Pacific Ocean 0 m highest point: Rocher Clipperton 29 m |
245 | British Indian Ocean Territory | 15 | lowest point: Indian Ocean 0 m highest point: unnamed location on Diego Garcia 15 m |
246 | Paracel Islands | 14 | lowest point: South China Sea 0 m highest point: unnamed location on Rocky Island 14 m |
247 | Marshall Islands | 10 | lowest point: Pacific Ocean 0 m highest point: unnamed location on Likiep 10 m |
248 | Coral Sea Islands | 6 | lowest point: Pacific Ocean 0 m highest point: unnamed location on Cato Island 6 m |
249 | Wake Island | 6 | lowest point: Pacific Ocean 0 m highest point: unnamed location 6 m |
250 | Cocos (Keeling) Islands | 5 | lowest point: Indian Ocean 0 m highest point: unnamed location 5 m |
251 | Tokelau | 5 | lowest point: Pacific Ocean 0 m highest point: unnamed location 5 m |
252 | Tuvalu | 5 | lowest point: Pacific Ocean 0 m highest point: unnamed location 5 m |
253 | Spratly Islands | 4 | lowest point: South China Sea 0 m highest point: unnamed location on Southwest Cay 4 m |
254 | Ashmore and Cartier Islands | 3 | lowest point: Indian Ocean 0 m highest point: unnamed location 3 m |
255 | Maldives | 2.4 | lowest point: Indian Ocean 0 m highest point: unnamed location on Wilingili island in the Addu Atoll 2.4 m |
256 | United States Pacific Island Wildlife Refuges | -2,133 | 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 |
| Akrotiri | | void |
| Dhekelia | | void |