Surname Designation Day

What Is Surname Designation Day?

Every February 13th is "Surname Designation Day" (苗字制定記念日, Myōji Seitei Kinenbi) in Japan. On February 13, 1875, the Meiji government issued the "Commoner Surname Compulsion Edict" (平民苗字必称義務令), making it legally mandatory for all Japanese citizens — not merely permitted, as the 1870 ordinance had established — to adopt and use a registered family surname. This 1875 compulsion order completed the transformation: for the first time in Japanese history, every person in the country was required to be identified by both a family name and a given name.

From Voluntary to Mandatory

The 1870 Commoner Surname Permission Edict (see September 19th, Family Name Day) had allowed ordinary Japanese to adopt surnames, but many did not — centuries of tradition had accustomed commoners to living without hereditary family names. The 1875 compulsion order removed this option: every household was required to register a surname within a specified period. Village headmen, local officials, and Buddhist temples helped many families choose surnames, often based on geographic features, occupations, clan connections, or auspicious characters.

The Surnames That Emerged

The mass adoption of surnames in 1875-1876 created Japan's current landscape of approximately 100,000 distinct family names. Some patterns are evident: surnames derived from geographic features (田中 Tanaka — "in the rice field," 山本 Yamamoto — "at the base of the mountain," 川上 Kawakami — "upstream") reflect the countryside where many families lived; those derived from occupations (大工 Daiku — "carpenter," 鍛冶 Kaji — "blacksmith") reflect traditional trades; and those borrowed from nearby samurai families or shrines reflect social relationships of the pre-Meiji era.

Japan's Family Name Culture

Japanese family names are placed before given names in Japanese convention — "Suzuki Ichiro" rather than "Ichiro Suzuki" — reflecting the cultural priority of family identity over individual identity. The current debate over allowing married couples to retain separate surnames (夫婦別姓, fūfu bessei) represents the most significant proposed change to Japan's surname system since the 1875 compulsion order.

Fun Facts

• Rarest surnames: Some Japanese surnames are held by only one or two families — including unusual characters or regional variations that were registered in 1875 and have been passed down unchanged ever since.
• Name changes after marriage: Currently, Japanese law requires married couples to share a surname — over 95% of couples take the husband's name, making Japan an outlier among developed nations in not permitting married name retention.