Name: Oku Hanako (奥華子)

| Birthdate: March 20th, 1978
| Birthplace: Funabashii, Chiba
| Blood Type: O
| Height: 153cm
| Musical Experience: 5 years of piano, 9 years of trumpet, 17 years of writing lyrics and music.
| Likes: Chinese Cooking, Dogs, Recycle Shops, Miyazaki Hayao, Picaso, Pottery, Ping Pong & Table Tennis.
| Dislikes: Spiral Stairs, Speeding, Stockings, Tempers, and people who are malicious.
| Pets: 1 Dog named Picasso

Hanako Oku (奥 華子, Oku Hanako, born March 20, 1978 in Funabashi, Chiba, Japan) is a J-Pop singer famous in her native Japan for her piano ballads. She rose to fame after performing the end-title track for the Madhouse film The Girl Who Leapt Through Time in 2006. She was signed to a major record label the preceding year.