Eyeshield 21 (アイシールド21) is an anime based on the manga series written by Riichiro Inagaki and illustrated by Yusuke Murata. It was co-produced by TV Tokyo, NAS, and Gallop. The television series first aired on Japan's TV Tokyo network from April 6, 2005 to March 19, 2008.
The anime series was later licensed in North America by Toonami Jetstream as a joint effort with Viz Media, and aired on December 17, 2007 on its site, but before its completion, the streaming service was shut down. The whole series was streamed in English by Crunchyroll, while Sentai Filmworks licensed the series, with distribution from Section23 Films on DVDs.