Naoko as a Baby Name. Meaning and Origin of Naoko

What is the meaning of the name Naoko ?

The baby name Naoko is a Female name , 3 syllables long and is pronounced IPA: /na.o.ko/; respelling: NAH-oh-koh (Japanese: na-o-ko).

Naoko is Japanese in Origin.

Naoko is a Japanese feminine given name formed from Nao + ko, where -ko means “child.” Nao can be written with multiple kanji, shaping the nuance: 直子 “honest/straight child”; 尚子 “esteemed child”; 奈緒子 or 菜緒子 “thread/connection + child” with 奈/菜 often used phonetically; and 奈央子 “central child.” As with many Japanese names, the selected characters determine the exact meaning, but Naoko commonly conveys ideas of uprightness, refinement, and connection.

The -ko suffix surged in popularity in the early 20th century and dominated girls’ names through the Shōwa era, making Naoko especially common from the 1950s–70s; usage declined as -ko names waned in late Heisei, though it remains a classic. It can be written in hiragana (なおこ) or katakana (ナオコ), and the diminutive Nao is familiar. Related names include Naomi (直美) and the masculine Naoki (直樹). Notable bearers include manga creator Naoko Takeuchi and astronaut Naoko Yamazaki.