Aldnoah.Zero , stylized as ΛLDNOΛH.ZERO, is a television and print series created by Olympus Knights and A-1 Pictures. It presents the fictional story of the Vers Empire's 37 clans of Orbital Knights' attempted reconquest of Earth—enabled by the empowering titular Aldnoah energy/drive technology—following return to Earth as a more technologically advanced people after a human diaspora to the planet Mars.

A-1 Pictures, Inc. is a Japanese animation studio founded by ex-Sunrise producer Mikihiro Iwata. It is a subsidiary of Sony Music Entertainment Japan's anime production firm Aniplex.