Alien vs Ninja (エイリアンVSニンジャ), also known as AvN, is a 2010 Japanese martial arts science-fiction comedy film written and directed by Seiji Chiba.

Shortly after joining forces with another band of ninjas led by the kunoichi Rin, they encounter a boy whose village was massacred by an unknown assailant.

He runs for his life, but is cornered by the alien, which swiftly decapitates him as his head lands on a temple post for a crow to feed on.

The boy leads Yamata and Rin to the temple, only to be surrounded by Jinnai and the dead ninjas, who are being manipulated by small organisms secreted from the alien's nostrils.

Rin dispatches the ninjas by ejecting the organisms from their throats while Yamata shoves his hand through Jinnai's mouth to extract the symbiote controlling him.

[5] In November 2009, it was announced that distribution rights were sold by Nikkatsu to Revolver Entertainment for the United Kingdom and to M Pictures for Thailand.