Template:Official Sites

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Manga

 * Kodansha Ltd. (Japanese) - Original Japanese publisher (YouTube).
 * Hajime Isayama's blog (Japanese) - Personal blog of the manga's author.
 * shingeki.net (Japanese) - Website for the manga (Twitter).
 * Kodansha Comics - Kodansha's English filial (Tumblr, Facebook, Twitter, Instagram, YouTube).
 * Crunchyroll Manga - Secondary translator for the manga (Facebook, Twitter, YouTube).

Anime

 * WIT STUDIO (Japanese) - Co-producer of the anime (Twitter).
 * Production I.G - Co-producer of the anime (Twitter).
 * shingeki.tv (Japanese) - Website for the anime (Season 1, Season 2, Twitter).
 * FUNimation - English licensor for the animes and movies.
 * Crunchyroll Anime - Secondary translator for the anime.
 * YouTube Pony Canyon - Anime trailers

Misc.
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 * Vertical Inc - English translator of the novels.
 * kyojinchu.tv (Japanese) - Website for the Junior High anime (Twitter).
 * Koei Tecmo (Japanese) - Video game producer (Twitter).