Streaming, rent, or buy Attack on Titan – Season 1:
Currently you are able to watch "Attack on Titan - Season 1" streaming on Crunchyroll or for free with ads on Crunchyroll. It is also possible to buy "Attack on Titan - Season 1" as download on Sky Store.
There aren't any free streaming options for Attack on Titan right now. If you want know when it is streaming for free, click 'Free' in the filters above and hit the notification bell.