Sadako

• , "chaste child"; the same characters can also be read as a Korean female given name, Jeong-ja
• , "child of integrity"

  People with the name

• Princess Sadako Kujō, later Empress Teimei of Japan, wife of Emperor Taishō
• Sadako Kurihara, Japanese poet
• Sadako Moriguchi, American businesswoman
• Sadako Ogata, Japanese scholar and United Nations administrator
• Sadako Pointer, American singer
• Sadako Sasaki, a childhood Hiroshima atomic bomb victim, who made origami cranes based on a legend about their healing properties, making them an international symbol for peace.
• Sadako Sawamura, Japanese actress
• Sadako Yamamoto, Japanese javelin thrower
• Sadako Yamashita, Japanese swimmer

  Fictional characters

• Sadako Yamamura, fictional character in the Japanese novel, manga and film franchise Ring