Japan–Russia border
| Japan–Russia border | |
|---|---|
Russian's Kunashir Island (background) seen from Japan's Shiretoko Peninsula (foreground) | |
| Characteristics | |
| Entities | Russia Japan |
| Length | 194.3 km |
| History | |
| Established | 1855 |
| Current shape | 1945 Potsdam Declaration, Treaty of San Francisco |
| Treaties | Treaty of Shimoda, Treaty of Saint Petersburg (1875), Treaty of Portsmouth, Soviet–Japanese Joint Declaration of 1956 |
| Notes | Japanese invasion of Sakhalin, Russo-Japanese War, Soviet–Japanese War |
The Japan–Russia border is the de facto maritime boundary that separates the territorial waters of the two countries. According to the Russian border agency, the border's length is 194.3 km (120.7 mi).
The two countries do not share a terrestrial border, although they did during the period 1905–1945 when the island of Sakhalin was split between Japan and the Russian Empire (and later the USSR).