May 14 - The Japan–British Exhibition opens at White City, London, the largest international exposition the Empire of Japan had participated in up to that time.
May 20 - Kōtoku Incident: police searching the room of Miyashita Takichi, discover a socialist-anarchist plot to assassinate the Japanese Emperor Meiji, leading to mass arrests.^[2]
August 22 - Japan–Korea Treaty of 1910: Japan formally annexes Korea. The treaty was proclaimed to the public (and became effective) on August 29, 1910, officially starting the period of Japanese rule in Korea.
October 1 - The Nippon Columbia record label is founded by Nipponophone Co., Ltd.
November - A confectionery brand Fujiya founded in Yokohama.
December - The Japanese Antarctic Expedition leaves Tokyo, led by Nobu Shirase.^[3]

Births

Deaths

March 3 - Sasaki Takayuki, government minister and court official (b. 1830)
April 15 - Tsutomu Sakuma, career naval officer and pioneer submarine commander (b. 1879)
April 22 - Rokuzan Ogiwara, sculptor (b. 1879)
June 11 - Kataharu Matsudaira daimyō (b. 1869)
July 3
- Tokugawa Akitake, daimyō (b. 1853)
- Matasaburō Watanabe, politician (b. 1850)
August 2 - Inoue Masaru, Director of Railways in Japan (b. 1843)
August 26 - Ume Kenjirō, legal scholar (b. 1860)
September 13 - Sone Arasuke, politician and Japanese Resident-General of Korea (b. 1849)
October 24 - Yamada Bimyō, novelist (b. 1868)
November 5 - Nishio Tadaatsu, daimyō (b. 1850)

Web site: Meiji emperor of Japan . Encyclopedia Britannica . 27 March 2019 . en.
Book: Nish, Ian Hill . Cortazzi, Hugh . Britain & Japan: Biographical Portraits . Japan Society Publications . 2002 . 338.
Book: The Japanese South Polar expedition, 1910-12 : a record of Antarctica. 2011. Bluntisham Books. Norwich. 9781852971090. Shirase Antarctic Expedition Supporters' Association.