| 1603 |
Tokugawa Ieyasu establishes Shogunate Government (Tokugawa Shogunate) in the town of Edo. Edo period begins. |
| 1657 |
Major fire in Edo claims over 100,000 lives. |
| 1674 |
Seki Takakazu publishes Hatsubi-Sanpo, presenting solutions to algebraic equations. |
| 1718 |
Firefighting organizations established. |
| 1721 |
First population census conducted (Edo’s population about 1.3 million). |
| 1722 |
Koishikawa Yojosho established as the first free hospital by the government. |
| 1854 |
Treaty of Peace and Amity between Japan and the U.S. concluded (Japan ends seclusion policy). |
| 1867 |
Tokugawa Yoshinobu, last shogun of the Tokugawa Shogunate, resigns and returns governing power to the Emperor. |
| 1868 |
New Meiji government established. Meiji era begins.
Edo renamed Tokyo and becomes a prefecture. |
| 1872 |
First railway line opens between Shimbashi, Tokyo and Yokohama. |
| 1877 |
First Industrial Exhibition held at Ueno Park. |
| 1879 |
First Tokyo-fu (prefecture) Conference held. |
| 1882 |
First zoo opened in Ueno. |
| 1885 |
Cabinet system established. Ito Hirobumi appointed as first Prime Minister. |
| 1888 |
Municipal organization system introduced. |
| 1889 |
Constitution of the Empire of Japan promulgated. Tokyo City and 15 wards established. |
| 1893 |
Jurisdiction of three Tama Areas transferred from Kanagawa Prefecture to Tokyo-fu. |
| 1894 |
Tokyo-fu Government Building completed in Marunouchi.
Sino-Japanese War begins (ends 1895). |
| 1904 |
Russo-Japanese War begins (ends 1905). |
| 1912 |
Taisho era begins. |
| 1914 |
World War I begins (ends 1918).
Red brick and tile Tokyo Station completed. |
| 1920 |
Japan becomes one of the original members of the League of Nations.
First census conducted. Population of Tokyo-fu rapidly increases and becomes 3,699,428. |
| 1923 |
Great Kanto Earthquake claims the lives of around 140,000 people and destroys about 300,000 houses. |
| 1925 |
Universal male suffrage enacted.
Radio broadcasting services launched. |
| 1926 |
Showa era begins. |
| 1927 |
First subway line opens between Asakusa and Ueno. |
| 1931 |
Tokyo Airport opens in Haneda. |
| 1935 |
Tokyo's resident population reaches 6.36 million (almost the same as New York City and London). |
| 1941 |
Port of Tokyo opens.
Pacific War begins. |
| 1943 |
Metropolitan administration system established. |
| 1945 |
March 10: Tokyo hit by heaviest air raid since beginning of war.
Pacific War ends.
Tokyo’s population drops to 3.49 million (half of 1940 levels). |
| 1947 |
Constitution of Japan promulgated.
New local self-government system introduced. Seiichiro Yasui elected first Governor of Tokyo by popular vote.
Tokyo launches 23 special-ward administration system. |
| 1951 |
Treaty of Peace with Japan and Japan-U.S. Security Treaty concluded. |
| 1953 |
Television broadcasting services launched. |
| 1956 |
Japan joins United Nations. |
| 1959 |
Ryotaro Azuma elected Governor of Tokyo. |
| 1962 |
Tokyo population reaches 10 million.
Start of high economic growth period. |
| 1964 |
Olympic Games held in Tokyo. |
| 1967 |
Ryokichi Minobe elected Governor. |
| 1968 |
Ogasawara Islands returned to Japan. |
| 1969 |
Tokyo Metropolitan Pollution Control Ordinance enacted. |
| 1973 |
Oil crisis occurs. |
| 1975 |
First public election of ward mayors conducted. |
| 1979 |
Fifth G7 Economic Summit Meeting held in Tokyo.
Shunichi Suzuki elected Governor. |
| 1982 |
Long-Term Plan for the Tokyo Metropolis announced. |
| 1989 |
Heisei era begins. |
| 1991 |
Tokyo Metropolitan Government Buildings move to Shinjuku from Marunouchi. |
| 1993 |
Rainbow Bridge opened. |
| 1995 |
Yukio Aoshima elected Governor. |
| 1997 |
Long-Term Strategies for a Resident-Friendly Tokyo announced. |
| 1999 |
Shintaro Ishihara elected Governor.
Fiscal Reconstruction Promotion Plan announced.
Say No to Diesel Vehicles! campaign launched. |
| 2000 |
Responsibility of refuse collection and disposal transferred to wards.
Miyake Island erupts and all residents evacuated. |
| 2001 |
Asian Network of Major Cities (ANMC21) holds 1st Plenary Meeting. |
| 2002 |
Accommodation tax introduced.
Tokyo City Promotion Campaign sends first mission to Europe. |
| 2003 |
Diesel Vehicle Emissions Regulations introduced in Greater Tokyo Area. |
| 2004 |
ShinGinko Tokyo Bank established. |
| 2005 |
New Tokyo Metropolitan University begins operations. |
| 2006 |
Tokyo selected as Japan’s applicant city for the 2016 Olympics.
Tokyo's Big Change: The 10-Year Plan announced. |
| 2007 |
Inaugural Tokyo Marathon held.
Tokyo announces Japan’s first financial statements based on the new public accounting system.
Green Tokyo Fundraising Campaign launched. |
| 2008 |
Tokyo selected as a candidate city for the 2016 Olympic and Paralympic Games.
C40 Tokyo Conference on Climate Change held. |
| 2009 |
Rio de Janeiro selected to host the 2016 Olympic Games. |
| 2010 |
Haneda Airport puts new runway and international terminal into service. |
| 2011 |
Great East Japan Earthquake occurs.
Ogasawara Islands inscribed on UNESCO’s World Heritage List.
Tokyo announces its bid to host the 2020 Olympic and Paralympic Games.
Tokyo Vision 2020 formulated. |
| 2012 |
Naoki Inose elected Governor. |