# List of territory purchased by a sovereign nation from another sovereign nation

This is a list of purchases of territory by a sovereign nation from another sovereign nation.
| Territory | Purchased by | Purchased from | Cost | Year | Area | Cost/Area | Agreement (article) |
| Isle of Man, Hebrides, Kintyre and islands of the Firth of Clyde | Scotland | Norway | 4,000 marks sterling, 100 mark annuity | 1266 | ~8,000 km² | ~0.5 marks sterling/km² | Treaty of Perth |
| Dunkirk and Fort-Mardyck | France | England | 5,000,000 livres | 1662 | ~44 km² | ~113,500 livres/km² | Sale of Dunkirk |
| Estonia, Livonia, Ingria, and Southeast Finland (Kexholmslän and part of Karelian Isthmus) | Russia | Sweden | 2,000,000 silver Swedish riksdaler | 1721 | ~100,000 km² | ~2,000 Riksdaler/km² | Treaty of Nystad |
| Saint Croix | Denmark–Norway | France | 750,000 livres | 1733 | 210 km² | 3571 livres/km² | |
| Louisiana | United States | France | $15,000,000 USD | 1803 | 2,140,000 km² | 7 USD/km² | Louisiana Purchase |
| Florida | United States | Spain | $5,000,000 USD | 1819 | ~200,000 km² | ~5 USD/km² | Adams–Onís Treaty |
| Singapore | United Kingdom | Johor | $60,000 Spanish dollars | 1824 | 728 km² | ~82 Spanish dollars/km² | |
| Tranquebar, Serampore, and other continental holdings of Danish India | United Kingdom | Denmark | 125,000 GBP or 1,125,000 Danish krone | 1845 | ~44 km² | ~2840 GBP/km² or ~25,600 Kr/km² | |
| California, Nevada, Utah, Arizona | United States | Mexico | $18,250,000 USD | 1848 | 1,360,000 km² | 13.4 USD/km² | Treaty of Guadalupe Hidalgo |
| Southern Arizona and New Mexico | United States | Mexico | $10,000,000 USD | 1853 | 76,800 km² | 130 USD/km² | Gadsden Purchase |
| Danish Gold Coast | United Kingdom | Denmark | 10,000 GBP | 1850 | ~12,000 km² | ~1.2 GBP/km² | |
| Saxe-Lauenburg | Prussia | Austria | 2,500,000 Danish rigsdaler | 1865 | 1,000 km² | 2,500 Rigsdaler/km² | Gastein Convention |
| Alaska | United States | Russia | $7,200,000 USD | 1867 | 1,717,856 km² | 4 USD/km² | Alaska Purchase |
| Dutch Gold Coast | United Kingdom | Netherlands | 46,939.62 Dutch guilders | 1872 | | | Anglo-Dutch Treaties of 1870–1871 |
| Saint Barthélemy | France | Sweden | 320,000 French francs | 1878 | 21 km² | 15,238 Francs/km² | |
| Philippines | United States | Spain | $20,000,000 USD | 1898 | 300,000 km² | 20 USD/km² | Treaty of Paris |
| Caroline Islands | Germany | Spain | 25,000,000 ESP | 1899 | 1,160 km² | 21,551 ESP/km² | German–Spanish Treaty |
| Palau | Germany | Spain | 25,000,000 ESP | 1899 | 1,160 km² | 21,551 ESP/km² | German–Spanish Treaty |
| Mariana Islands | Germany | Spain | 25,000,000 ESP | 1899 | 1,160 km² | 21,551 ESP/km² | German–Spanish Treaty |
| Cagayan Sulu and Sibutu | United States | Spain | $100,000 USD | 1900 | 467 km² | 214 USD/km² | Treaty of Washington |
| Acre (state) | Brazil | Bolivia | £2,000,000 | 1903 | 142,800 km² | 14 GBP/km² | Treaty of Petrópolis |
| Danish West Indies | United States | Denmark | $25,000,000 USD | 1916 | 400 km² | 62,500 USD/km² | Treaty of the Danish West Indies |
| Jäniskoski-Niskakoski territory | Soviet Union | Finland | 700,000,000 FIM | 1947 | 176 km² | 700 FIM/km² | |
| Gwadar | Pakistan | Muscat and Oman | 5,500,000,000 PKR | 1958 | 15,210 km² | 361,604 PKR/km² | Gwadar Purchase |
| Elten, Selfkant, and Suderwick | West Germany | Netherlands | 280 million DM | 1963 | 69 km² | 4.1 million DM/km² | Ausgleichsvertrag |
| Tiran Island and Sanafir Island | Saudi Arabia | Egypt | $22 billion USD in oil and development aid | 2017 | 113 km² | | Agreement of maritime delimitation between the Kingdom of Saudi Arabia and the Arab Republic of Egypt |