Genkai

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, a term for Japanese villages that are in danger of disappearing