Zero: Black Blood (絶狼＜ZERO＞-BLACK BLOOD-, Zero -Burakku Buraddo-) is a Japanese film duology and television miniseries, a spin-off from the Garo television series. The film is split into two portions. The White Chapter (白ノ章, Shiro no Shō), which comprises the first three episodes of the miniseries, had a limited theatrical release on March 8, 2014, and the Black Chapter (黒ノ章, Kuro no Shō), the last three episodes, had a limited theatrical release on March 22, 2014. The film was also shown on the Japanese cable television channel Family Gekijo as a six-episode miniseries from March 5 through March 7, 2014, with two episodes shown each night.

Ray Fujita stars as the lead character Rei Suzumura, the Silver Fanged Knight Zero, reprising his role as the character from the previous television series and films. The films/miniseries explore this character who served a supporting role in the previous productions and his investigation of a joint human and Horror commune led by the Horror Ring.