Daiju is both a masculine Japanese given name and a Japanese surname. Notable people with the name include:
*, Japanese footballer
*, Japanese footballer
*, Japanese mixed martial arts fighter and kickboxer
*
Daiju Hisateru
Daiju Hisateru (born 19 March 1950 as Toshiaki Sakaiya) is a former sumo wrestler from Hokkaidō, Japan. His highest rank was ''Makuuchi#Ōzeki, ōzeki'', but he held the rank for only five tournaments, fewer than any ''ōzeki'' in the modern er ...
, Japanese sumo wrestler
{{given name, type=both
Japanese-language surnames
Japanese masculine given names
Masculine given names