The name Hanako is a girl's name of Japanese origin meaning "flower child". Hanako and is often added to lists like Japanese Baby Names and discussed in our forums with posts like "The Traveler's Family".
From the experts:
Hanako has a delicate sound and quaint meaning -- but there's a catch. According to widespread urban legend in Japan, Hanako is the name of the ghost of a little girl who haunts school bathrooms, who sometimes answers if you call her name.
The so-called "Hanako of the Toilet" has been the subject of countless fictional adaptations since the rumor started to circulate in the 1950s. Hanako was once such a common name that it was used in the Japanese equivalent of "Jane Doe," but it's gotten much less popular as the legend of Hanako-san has spread.