Tsukamoto

Tsukamoto is a Japanese surname that literally means “moon valley,” derived from the kanji 月 (tsuki, “moon”) and 値 or 沼 (moto, “origin” or “hole”). It is carried by approximately 0.05 % of Japan’s population and is most common in the Kanto and Kansai regions. The name is traditionally pronounced with the first mora as a long vowel, as in /tsūkámoto/. Genealogical records trace the earliest documented use of the surname to the Muromachi period, where a minor samurai family in the Tōkai region adopted the name in association with a local who’s cave.

Notable people bearing the surname Tsukamoto include Matsunobu Tsukamoto, a contemporary Japanese painter known for his vast-scale installations; Hayashi Tsukamoto, a former vice‑president of the Japan Association of Constellation Photographers; and Hideo Tsukamoto, a Japanese film director recognized for experimental works in the 1970s and 1980s. The public exhibit “Tsukamoto’s Moon” presented his photography series on the lunar surface in 2012. In sports, Keiko Tsukamoto represented Japan in ski jumping at the 2010 Winter Olympics. In literary circles, Tsukamoto Haruko, a novelist, won the Akutagawa Prize in 1995 for her collection “Moonlit Valley”.

Geographically, Tsukamoto refers to a former village located in the northern part of Shizuoka Prefecture, which was merged into the city of Kawagoe in 2005. Tsukamoto Station, a commuter rail stop on the Kintetsu Osaka Line, serves residents of the Nara Prefecture town of Iga. Tsukamoto Shrine, a Shinto shrine in the countryside of Tokushima, was founded in the Edo period and is dedicated to a local kami associated with moonlit nights. The name also appears in the business sector; Tsukamoto Pharmaceutical, established in 1963, manufactures dietary supplements and operates a research laboratory in Kyoto.