For more than 150 years, Tokyo has been the center of government, business, and daily life in Japan. However, discussions have recently resurfaced about establishing a second capital as a contingency measure in case Tokyo is hit by a major disaster.
So, is Tokyo really going to be replaced as Japan’s capital?
Is Tokyo Really Going to Be Replaced as Japan’s Capital?
No. Tokyo remains the capital of Japan.
What is being considered is not a replacement for Tokyo, but the concept of a second capital—a backup city that could take over some government functions if Tokyo were severely affected by a major disaster.
In late July 2026, Japan’s Parliament passed a bill related to the establishment of a “second capital.”
The move is part of efforts to strengthen national disaster preparedness following decades of discussion, particularly initiatives promoted by the Osaka and Kansai regions.
In short, Japan is not moving its capital. Instead, the country is preparing a backup government center that could be used in the event of a major emergency.
Why Is Japan Considering a Second Capital?
There are two main reasons why discussions about relocating some government functions or establishing a backup capital have gained attention in Japan.
1. The Risk of a Major Earthquake in Tokyo
Tokyo is located in a seismically active region influenced by the convergence of several tectonic plates. Experts have warned of the possibility of a major earthquake affecting the Tokyo area in the coming decades.
If such a disaster were to occur, government operations, economic activity, and essential services could potentially be disrupted at the same time.
2. The Concentration of National Functions in Tokyo
Tokyo is not only Japan’s political capital but also its major business and financial center.
More than 30% of Japan’s population lives in the Greater Tokyo metropolitan area, while many government ministries, corporate headquarters, and critical infrastructure are also concentrated there.
This concentration has prompted Japan to consider contingency plans in case Tokyo experiences a major disaster.
Japan’s Capitals Before Tokyo
Interestingly, the idea of having a capital other than Tokyo is not new in Japanese history. Japan has moved its capital several times over the centuries:
| Capital | Period | Historical Name | Description |
|---|---|---|---|
| Nara | 710–784 AD | Heijo-kyo (平城京) | Japan’s first permanent capital, known for the flourishing of art and Buddhism. Todai-ji was built during this era. |
| Nagaoka | 784–794 AD | Nagaoka-kyo (長岡京) | A temporary capital for 10 years before the capital was moved to Kyoto. |
| Kyoto | 794–1869 AD | Heian-kyo (平安京) | Japan’s longest-serving capital, remaining the imperial capital for more than 1,000 years until the Meiji era. |
| Tokyo | 1869–present | Formerly Edo (江戸) | Edo was renamed Tokyo (“Eastern Capital”) when Emperor Meiji moved the imperial court there in 1869. |
One interesting fact about Japan’s capital is that Tokyo has never been officially designated as the capital by Japan’s Constitution.
Tokyo’s status as the capital developed through government practice beginning in 1869 rather than through a specific law explicitly declaring it the capital.
Because of this, discussions about establishing a second capital or a backup government center are considered legally more feasible than they might be in countries where the capital is explicitly defined by law.
Although the idea of a “second capital” is still under discussion and no final decision has been made, several cities are frequently mentioned as potential candidates, including Osaka, Fukuoka, Nagoya, and Sapporo.
