Kikuo (written: 喜久夫, 喜久雄, 喜久男 or 規矩雄) is a masculine Japanese given name. Notable people with the name include:
Kikuo Arai (新井 規矩雄, born 1943), Japanese golfer
Kikuo Chishima (千島 喜久男, 1899–1978), Japanese scientist
Kikuo Takano (高野 喜久雄, 1927–2006), Japanese poet and mathematician
Kikuo Wada (和田 喜久夫, born 1951), Japanese sport wrestler
R. Kikuo Johnson (born 1981), American illustrator and cartoonist
Kikuo (born 1988), a popular producer of Vocaloid music from Japan
