"Embryo" (stylized as "embryo") is the 12th single by Japanese heavy metal band Dir En Grey, released on December 19, 2001.

[1] The first B-side, "Zomboid Reishiki Mix", is a remixed recording by Shinya and Toshiya of another track off the band's same album, Kisō.

The second B-side is "Embryo Uteute Boogie-Woogie Elegy Mix" a remix of the title track done by Die.

All lyrics are written by Kyo; Music composed by Dir En Grey.