Common Japanese surnames: what they mean and where they come from

Most surnames describe a place

The same few kanji turn up again and again. Learn these and you can read hundreds of surnames:

• 田 ta / da, rice field: Tanaka 田中, Yamada 山田, Ikeda 池田, Maeda 前田.
• 山 yama, mountain: Yamamoto 山本, Yamaguchi 山口, Yamazaki 山崎.
• 川 kawa / gawa, river: Ishikawa 石川, Ogawa 小川, Hasegawa 長谷川.
• 村 mura, village: Nakamura 中村, Kimura 木村, Murakami 村上.
• 本 moto, base or foot of something: Yamamoto, Matsumoto 松本, Hashimoto 橋本.
• 崎 saki / zaki, cape or promontory: Yamazaki, Miyazaki 宮崎.
• 井 i, well; 橋 hashi, bridge; 林 hayashi, grove; 森 mori, forest; 野 no, plain; 島 shima, island; 岡 oka, hill.

Watch the sound changes. When a word comes second in a compound it often turns voiced: kawa becomes gawa in Ogawa, ta becomes da in Yamada, hayashi becomes bayashi in Kobayashi, saki becomes zaki in Yamazaki. This sound change is called rendaku, and it doesn't always happen: Ishikawa keeps its k. Each name has its own settled reading, which is why the generator stores the reading for every kanji instead of guessing it.

The -tō names: one kanji, one clan

Look at the top ten again: Satō 佐藤, Itō 伊藤 and Katō 加藤 all end in 藤, wisteria. It isn't about flowers. 藤 is the fuji of Fujiwara 藤原, the court clan that dominated Japanese politics for centuries. As nippon.com explains, families that claimed Fujiwara descent joined 藤 to a character for a place or an office, and in these compounds it is read tō.

The traditional explanations, as listed in Japanese reference works such as the Japanese Wikipedia article on the Fujiwara:

• Satō 佐藤: the Sano estate in Shimotsuke province.
• Katō 加藤: an assistant governor of Kaga province.
• Endō 遠藤: a governor of Tōtōmi province.
• Kondō 近藤: an official of Ōmi province.
• Saitō 斎藤: the head of the office that served the Ise Shrine priestess (斎 means "purification").
• Kudō 工藤: an official of the palace carpentry bureau (工 means "craft").
• Mutō 武藤: the palace guard of warriors (武 means "military").

Two cautions, which I give everyone who asks what their -tō surname "means". First, the same source points out that many families with these names probably had no Fujiwara ancestors at all; a prestigious kanji was a popular choice. Second, a literal reading such as "assisting wisteria" for 佐藤 is simply wrong. The honest gloss is "佐 + Fujiwara".

How ordinary people got surnames

For most of Japanese history, an official surname was a privilege. In the Edo period samurai, court nobles and some wealthy commoners used family names in public. Many farmers and townspeople had a family name too, but they could not use it officially, so in public they went by a given name and perhaps a trade or place: Kichibei of the rice shop.

That changed in the early Meiji period. The new government built a national family register for taxes and military service, and commoners were first allowed and, a few years later, required to have a surname. Many families simply registered the name they had used privately for generations. Others picked one from their surroundings (the field, the bridge, the pine by the house) or borrowed the name of a local landowner or a famous clan. That is the main reason landscape names dominate the lists, and why one surname can turn up in unrelated families all over the country.

Where each name is common

Surnames still cluster by region, which is a useful detail for a character's background. According to the same nippon.com data, Satō is especially common in Akita and Yamagata in the Tōhoku north-east, while Suzuki concentrates in Aichi, Shizuoka, Ibaraki, Tochigi, Saitama and Kanagawa. Okinawa has its own set (Higa 比嘉, Kinjō 金城, Ōshiro 大城) that you rarely meet among old families on the main islands. If your character's family has lived in Okinawa for generations, a Satō would be the unusual choice.

Readings you cannot guess

Most surnames read the way the kanji suggest, but some don't, and these are where generators and translators go wrong:

• 長谷川 Hasegawa: 長谷 is read hase, a reading that has nothing to do with the usual sounds of 長 "long" and 谷 "valley".
• 服部 Hattori: from hatori-be, an ancient guild of weavers; the kanji were kept while the sound shifted.
• 東海林 Shōji: "east + sea + grove", read Shōji (and in some families Tōkairin).
• 小鳥遊 Takanashi: "little birds play", read as "no hawks", because little birds can only play where there are no hawks. It is a real, if rare, surname.
• 清水 Shimizu: "clear water", a spring. The reading belongs to the word as a whole rather than to each kanji, and the same kanji are read Kiyomizu in other names.

The rule I follow: never work out a surname's reading from its kanji. Look it up in a name dictionary such as JMnedict, where every entry is listed with its kanji and reading.

30 common surnames taken apart

Notice how little the literal parts tell you about the people who carry the name. A Tanaka today is no more likely to farm rice than a Smith is to shoe horses. In fiction, the surname mainly signals ordinariness or distinction. Satō, Suzuki and Tanaka make a character an everyman; Kurosawa or Takanashi make the reader stop for a moment.

To try these out, set the Japanese name generator to Surnames only. Every surname comes with its kanji, its reading, the meaning of each kanji and a rarity badge based on how common it is; the Fujiwara -tō names and old clan names also get a short note on their origin.