Aum Shinrikyo is a Japanese cult movement founded by Shoko Asahara which carried out a terrorist attack on a Tokyo subway in 1995. Although it claims to be a new religious movement, several governments regard it as a terrorist movement.

Aum members used a poisonous gas called Sarin for their attack. In five attacks, they released sarin on several lines of the Tokyo subway. This killed thirteen people, and severely injured fifty. It caused temporary vision problems for nearly a thousand others.