Nobuaki (written: 信著, 信朗, 信明, 信昭, 信秋, 伸顕, 伸明, 伸彰, 修光 or 陳爾) is a masculine Japanese given name. Notable people with the name include:
Nobuaki Anzai (安斎 伸彰; born 1985), Japanese Go player
Nobuaki Arai (荒井 修光; born 1973), Japanese baseball player
Nobuaki Iwatake (岩竹 信明; 1923–2012), American Imperial Japanese Army personnel
Nobuaki Kakuda (角田 信朗; born 1961), Japanese karateka
Nobuaki Kaneko (金子 信昭; born 1981), Japanese drummer and actor
Nobuaki Katayama, Japanese automotive engineer
Nobuaki Kobayashi (小林 伸明; 1942–2019), Japanese billiards player
Nobuaki Koga (古贺 伸明; born 1952), Japanese trade unionist
Nobuaki Maeda (前田 陳爾; 1907–1975), Japanese Go player
Makino Nobuaki (牧野 伸顕; 1861–1949), Japanese diplomat
Nobuaki Minegishi (嶺岸 信明; born 1959), Japanese manga artist
Nobuaki Nakanishi (中西 伸彰), Japanese anime director
Nobuaki Sato (佐藤 信秋; born 1947), Japanese politician
Nobuaki Sekine (関根 信昭; born 1934), Japanese anime director
Tsugaru Nobuaki (津軽 信著; 1719–1746), Japanese daimyō
Yamadera Nobuaki, Japanese samurai
Nobuaki Yanagida (柳田 伸明; born 1970), Japanese footballer and manager