Ryōji, Ryoji or Ryouji (written: 良二, 良治, 良司, 良仁, 涼至, 亮二, 亮司, 了滋, 領二 or 諒司) is a masculine Japanese given name. Notable people with the name include:
Ryoji Aikawa (相川 亮二) (born 1976), Japanese baseball playerRyōji Akiyama (秋山 亮二) (born 1942), Japanese photographerRyōji Arai (荒井 良二) (born 1956), Japanese illustratorRyōji Chūbachi (中鉢 良治) (born 1947), Japanese businessmanRyoji Fukui (福井 諒司) (born 1987), Japanese footballerRyoji Ikeda (池田 亮司) (born 1966), Japanese sound artistKaihō Ryōji (海鵬 涼至) (born 1973), Japanese sumo wrestlerRyoji Katsuki (香月 良仁) (born 1984), Japanese baseball playerRyoji Kawamoto (川本 良二) (born 1982), Japanese footballerRyōji Minagawa (皆川 亮二) (born 1964), Japanese manga artistRyoji Nakagawa (中川 了滋) (born 1939), Japanese judgeRyoji Nakata (中田 亮二) (born 1987), Japanese baseball playerRyōji Noyori (野依 良治) (born 1938), Japanese chemistRyoji Sai (崔 領二) (born 1980), Japanese professional wrestlerTamakasuga Ryōji (玉春日 良二) (born 1972), Japanese sumo wrestlerRyōji Uehara (上原 良司) (1922–1945), Imperial Japanese Army flight captainRyoji Ujihara (氏原 良二) (born 1981), Japanese footballerRyoji Yamanaka (born 1983), Japanese footballer