Koichi as a Baby Name. Meaning and Origin of Koichi

What is the meaning of the name Koichi ?

The baby name Koichi is a Male name , 3 syllables long and is pronounced IPA: /ko.i.tɕi/; respelling: KO-ee-chee (often KOH-ee-chee; long-o spelled Kōichi or Kouichi).

Koichi is Japanese in Origin.

Koichi is a Japanese masculine given name combining kō (variously written) and ichi “one; first.” Depending on the kanji, kō may mean "vast" (浩), "happiness" (幸), "light" (光), "bright" (晃), "health" (康), "cultivate" (耕), or others; ichi is most often 一. Thus meanings range from “vast one” and “first light” to “cultivating one,” and the name can imply a first-born son or a leading figure.

Pronounced KOH-ee-chee, it appears in romanization as Kōichi (with macron), Kouichi, or simply Koichi. The name rose to broad popularity in the Shōwa era and remains familiar through notable bearers such as Nobel laureate Koichi Tanaka (田中耕一), aikido teacher Koichi Tohei (藤平光一), and entertainer Koichi Domoto (堂本光一). Nicknames include Kō-chan or Kō-kun. Variant spellings or kanji create related forms like Kouichi or 光一/浩一/幸一/耕一, giving parents flexibility while retaining a classic, steady feel.