Ritsuko, (written: 律子 lit. "law, child", りつ子 or リツ子), is a feminine Japanese given name. Notable people with the name include:
Ritsuko Hiroto (born 1981), Japanese cricketerRitsuko Kawai (河井 リツ子, born 1964), Japanese writerRitsuko Matsuda (松田 律子, born 1977), Japanese singerRitsuko Nakayama (中山 律子, born 1942), Japanese bowlerRitsuko Nemoto (根本 りつ子, born 1929), Japanese actressRitsuko Okazaki (岡崎 律子, 1959–2004), Japanese singer-songwriterRitsuko Taneda (種田 律子), Japanese musicianFictional characters:
Ritsuko Akagi (赤木 リツコ), a character in the anime series Neon Genesis EvangelionRitsuko Akizuki (秋月 律子), a character in the video game series THE iDOLM@STERRitsuko Sakakibara (榊原 律子), a character in the novel Another