Isamu is a masculine Japanese given name that carries connotations of bravery and boldness. Its most common kanji form is 勇, which means "courage" or "bravery." The name can also be written with other kanji characters that share the same reading (いさむ), such as 勲 meaning "merit," 敢 meaning "gallantry," or 武 meaning "war." As is typical with Japanese names, Isamu can also be written purely in hiragana or katakana without kanji. Etymology The phonetic root いさむ is directly derived from the verb 勇む (isamu), which means "to be spirited, to be in high spirits" or "to become brave." The semantic core of the name thus ties closely to the virtue of bravery in Japanese culture. Notable Bearers Several prominent individuals have borne the name Isamu. Isamu Akasaki (1929–2021) was a Nobel Prize-winning Japanese physicist known for inventing the blue light-emitting diode (LED). Isamu Chō (1895–1945) was a general in the Imperial Japanese Army during World War II. Others include Isamu Fujisawa (born 1987), a Japanese racewalker; Isamu Kamikokuryo (born 1970), a video game artist for Square Enix; and Isamu Kashiide (1915–2003), a flying ace in the Japanese Army Air Service. The American journalist and musician Isamu Jordan (1975–2013) also carried the name, reflecting its modest reach beyond Japan. Written Forms As each kanji carries a different nuance, the choice of spelling (one of several possible isamu characters) can subtly alter the meaning. For example, parents may opt for 武 to connote martial prowess, or 勲 to highlight achievement. All forms retain the phonetic core that signifies valor. Related Names The same kanji Yong in Korean, Yū or Yuu in Japanese male names, and Dũng in Vietnamese can also mean "brave" or "courage." These names share both the semantic field and an East Asian cultural appreciation for bravery. Meaning: brave, courage (common kanji: 勇) Origin: Japanese Type: given name Usage regions: Japan; also rarely in countries with Japanese diaspora