- The-Otakusphere Sheet Music Library: This online library has sheet music for a wide variety of anime themes. You can search for Inazuma Eleven theme songs and find sheet music for individual instruments, as well as full scores.
- MuseScore: MuseScore is an open-source sheet music editor and publisher. You can search for Inazuma Eleven theme songs and find user-created sheet music for free. You can also contribute your own sheet music to the site.
- Reddit: The Inazuma Eleven Subreddit has a wiki page with links to sheet music for Inazuma Eleven theme songs. You can find sheet music for individual instruments, as well as full scores.
- Google Search: You can also use Google Search to find Inazuma Eleven Anime sheet music. Many websites host sheet music for Inazuma Eleven theme songs, and you can find links to these websites by searching for "Inazuma Eleven sheet music."