Genkai may refer to:
*
Genkai, Saga, a town in Saga Prefecture, Japan
*
Genkai Sea or Genkainada, a sea in Japan
*
Genkai (''YuYu Hakusho''), a fictional character in the anime and manga series ''YuYu Hakusho''
* Genkai, a Japanese dictionary written by
Otsuki Fumihiko
*
Genkai shūraku is any village or hamlet within a merged town or village in Japan that has experienced depopulation and in danger of disappearing altogether, largely because half of the people living there reach the age of 65 and over.
Such villages are generall ...
, a term for Japanese villages that are in trouble of disappearing
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