Katsuo as a Baby Name. Meaning and Origin of Katsuo

What is the meaning of the name Katsuo ?

The baby name Katsuo is a Male name , 3 syllables long and is pronounced /ka.t͡sɯ.o/ (KAH-tsoo-oh).

Katsuo is Japanese in Origin.

Katsuo is a Japanese masculine given name whose meaning depends on the kanji. Common forms include 勝男/勝夫/勝雄 (“victorious man,” “man of triumph”), 克夫 (“one who overcomes”), 功男 (“man of merit”), 活男 (“lively man”), and 勝生 (“victorious life”). It can be written in kana as かつお or カツオ. Although the homophonous 鰹 means “skipjack tuna,” that character is not typically used for personal names. Nicknames often shorten it to Katsu; romanization variants include the older Kunrei/Nihon-shiki form Katuo.

The name saw steady use through the Taisho and early Showa eras and was especially familiar in mid-20th century Japan, when many boys’ names ended in -o (男/夫/雄). It carries a classic, slightly retro feel today but remains recognizable through figures such as diplomat Katsuo Okazaki and Olympic swimmer Katsuo Takaishi, as well as the long-running character Isono Katsuo from Sazae-san.

⚙ Katsuo is far from common. We count 45 recorded uses of it across 13 countries.